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Exhibit 4.1    
    

 
 

[SPECIMEN UNIT CERTIFICATE]    
    

	NUMBER	 	UNITS
	
U-________	
 	

 
 

CAPSTAR ACQUISITION CORP.
  Incorporated Under the Laws of the State of Delaware    
    

        CUSIP________  

SEE REVERSE FOR

CERTAIN DEFINITIONS 

 
 

UNITS CONSISTING OF ONE SHARE OF COMMON STOCK AND ONE WARRANT EACH TO PURCHASE ONE SHARE OF COMMON STOCK    
    

This certifies that ________________________________ is the owner of ________________________________ Units. 

Each
Unit ("Unit") consists of one (1) share of common stock, par value $0.0001 per share ("Common Stock"), of Capstar Acquisition Corp., a Delaware corporation (the "Company"), and one warrant
(each a "Warrant"). Each Warrant entitles the holder to purchase one (1) share of Common Stock for $7.50 per share (subject to adjustment). Each Warrant will become exercisable on the later of
(i) the Company's completion of a merger, capital stock exchange, asset acquisition or other similar business combination and (ii)
                         , 2009, and will expire unless exercised
before 5:00 p.m., New York time, on                        , 2012, or earlier upon redemption. The Common Stock and Warrants
comprising the Units represented by this certificate are not transferable
separately prior to five business days following the earlier to occur of the expiration of the underwriters' over-allotment option and the exercise in full by the underwriters of such
option. The terms of the Warrants are governed by a Warrant Agreement, dated as of                        , 2008, by and between
the Company and Continental Stock Transfer & Trust Company, as Warrant
Agent, and are subject to the terms and provisions contained therein, all of which terms and provisions the holder of this certificate consents to by acceptance hereof. Copies of the Warrant Agreement
are on file at the office of the Warrant Agent at 17 Battery Place, New York, New York 10004, and are available to any Warrant holder on written request and without cost. 

This
certificate is not valid unless countersigned by the Transfer Agent and Registrar of the Company. 

Witness
the facsimile seal of the Company and the facsimile signatures of its duly authorized officers. 

	Dated: __________, 2008	 	[Corporate Seal]

Delaware	 	__________________

Authorized Officer

 
 

Capstar Acquisition Corp.    
    

        The Company will furnish without charge to each stockholder who so requests, a statement of the powers, designations, preferences and relative, participating,
optional or other special rights of each class of stock or series thereof of the Company and the qualifications, limitations, or restrictions of such preferences and/or rights. This certificate and
the Units represented hereby are issued and shall be held subject to the terms and conditions applicable to the securities underlying and comprising the Units. 

        The
following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or
regulations: 

	 	TEN COM	as tenant in common	UNIF GIFT MIN ACT	    
	Custodian	    

	 	 	 	 	(Cust)	 	(Minor)
	 	TEN ENT	tenants by the entireties	 	Under Uniform Gifts to Minors Act:
	 	 	 	 	    
	 
	 	 	 	 	(State)	 	 
	 	JT TEN	as joint tenants with right of survivorship and not as tenants in common	 	 	 	 

        Additional
abbreviations may also be used though not in the above list. 

For value received, __________________________ hereby sells, assigns and transfers unto __________________________  

PLEASE
INSERT SOCIAL SECURITY OR OTHER

         IDENTIFYING NUMBER OF ASSIGNEE 

_____________________________________________

	

	(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

______________________________Units represented by the within Certificate, and do hereby irrevocably constitute and appoint
______________________________ Attorney to transfer said Units on the books of the within named Company with full power of substitution in the premises. 

	Dated____________________	 	

	 	 	Notice: The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.

Signatures(s) Guaranteed: 

_____________________________________________

THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE
MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15). 

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Exhibit 4.1

[SPECIMEN UNIT CERTIFICATE]

CAPSTAR ACQUISITION CORP. Incorporated Under the Laws of the State of Delaware

UNITS CONSISTING OF ONE SHARE OF COMMON STOCK AND ONE WARRANT EACH TO PURCHASE ONE SHARE OF COMMON STOCK

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Exhibit 4.2    
    

 
 

[Specimen Common Stock Certificate]    
    

	NUMBER	 	SHARES
	
________	
 	

 
 

CAPSTAR ACQUISITION CORP.
  Incorporated Under the Laws of the State of Delaware    
    

	 	COMMON STOCK	CUSIP_________
	 	 	SEE REVERSE FOR

CERTAIN DEFINITIONS

This Certifies that ________________________________ is the registered holder of
________________________________  

  
 

    FULLY PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $0.0001
  EACH OF THE COMMON STOCK OF
  
    CAPSTAR ACQUISITION CORP.    
    

transferable on the books of the Corporation in person or by duly authorized attorney upon surrender of this certificate properly endorsed.

The Corporation will be forced to liquidate if it is unable to complete a business combination by _______________, 2010, all as more fully described in the Corporation's final
prospectus dated _______________, 2008.

This Certificate is not valid unless countersigned by the Transfer Agent and registered by the Registrar. Witness the seal of the Corporation and the facsimile signatures of
its duly authorized officers.

Dated:_______________  

Corporate Seal 

Delaware

	
 CHIEF EXECUTIVE OFFICER	 	
 SECRETARY

        The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to
applicable laws or regulations: 

	 	TEN COM	as tenant in common	UNIF GIFT MIN ACT	    
	Custodian	    

	 	 	 	 	(Cust)	 	(Minor)
	 	TEN ENT	tenants by the entireties	 	Under Uniform Gifts to Minors Act:
	 	 	 	 	    
	 
	 	 	 	 	(State)	 	 
	 	JT TEN	as joint tenants with right of survivorship and not as tenants in common	 	 	 	 

        Additional
abbreviations may also be used though not in the above list. 

 
 

Capstar Acquisition Corp.    
    

        The Corporation will furnish without charge to each stockholder who so requests the powers, designations, preferences and relative participating, optional or
other special rights of each class of stock or series thereof of the Corporation and the qualifications, limitations, or restrictions of such preferences and/or rights. This certificate and the shares
represented hereby are issued and shall be held subject to all the provisions of the Certificate of Incorporation and all amendments thereto and resolutions of the Board of Directors providing for the
issue of shares of Preferred Stock (copies of which may be obtained from the secretary of the Corporation), to all of which the holder of this certificate by acceptance hereof assents. 

 For value received, __________________________ hereby sell, assign and transfer unto  

PLEASE
INSERT SOCIAL SECURITY OR OTHER

         IDENTIFYING NUMBER OF ASSIGNEE 

_____________________________________________

	

	(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

______________________________shares of the capital stock represented by the within Certificate, and do hereby irrevocably constitute and appoint
______________________________ Attorney to transfer said stock on the books of the within named Company with full power of substitution in the premises.

	Dated____________________	 	

	 	 	Notice: The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.

Signatures(s) Guaranteed: 

_____________________________________________

THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE
MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15). 

The holder of this certificate shall be entitled to receive funds from the Corporation's trust account only in the event of a liquidation of the Corporation upon failure to
consummate a business combination or if the holder seeks to convert his, her or its respective shares into cash upon a business combination which he, she or it voted against and which is actually
completed by the Corporation. In no other circumstances shall the holder have any right or interest of any kind in or to the trust account.  

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Exhibit 4.2

[Specimen Common Stock Certificate]

CAPSTAR ACQUISITION CORP. Incorporated Under the Laws of the State of Delaware

FULLY PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $0.0001 EACH OF THE COMMON STOCK OF CAPSTAR ACQUISITION CORP.

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Exhibit 4.3    
    

[Form
of Warrant Certificate] 

[FACE]

	Number	 	Warrants
	
________	
 	

 
 

THIS WARRANT WILL BE VOID IF NOT EXERCISED PRIOR TO
  5:00 P.M. NEW YORK CITY TIME, ____________, 2012    
    

 
 

CAPSTAR ACQUISITION CORP.
  Incorporated Under the Laws of the State of Delaware    
    

        CUSIP________  

  
 

    Warrant Certificate    
    

        This Warrant Certificate certifies that ________________________________, or registered assigns, is the registered
holder of ____________ warrants (the "Warrants") to purchase shares of Common Stock, $.0001 par value (the "Common
Stock"), of Capstar Acquisition Corp., a Delaware corporation (the "Company"). Each Warrant entitles the holder, upon exercise
during the period set forth in the Warrant Agreement referred to below, to receive from the Company that number of fully paid and nonassessable shares of Common Stock (each, a
"Warrant Share") as set forth below, at the exercise price (the "Exercise Price") as determined pursuant
to the Warrant Agreement, payable in lawful money of the United States of America upon surrender of this Warrant Certificate and payment of the Exercise Price at the office or agency of the Warrant
Agent referred to below, subject to the conditions set forth herein and in the Warrant Agreement. Defined terms used in this Warrant Certificate but not defined herein shall have the meanings given to
them in the Warrant Agreement. 

        Each
Warrant is initially exercisable for one fully paid and non-assessable share of Common Stock. The number of Warrant Shares issuable upon exercise of the Warrants are
subject to adjustment upon the occurrence of certain events set forth in the Warrant Agreement. 

        The
initial Exercise Price per share of Common Stock for any Warrant is equal to $7.50 per share. The Exercise Price is subject to adjustment upon the occurrence of certain events set
forth in the Warrant Agreement. 

        Warrants
may be exercised only during the Warrant Exercise Period subject to the conditions set forth in the Warrant Agreement and to the extent not exercised by the end of such Warrant
Exercise Period such Warrants shall become void. 

        Reference
is hereby made to the further provisions of this Warrant Certificate set forth on the reverse hereof and such further provisions shall for all purposes have the same effect as
though fully set forth at this place. 

        This
Warrant Certificate shall not be valid unless countersigned by the Warrant Agent, as such term is used in the Warrant Agreement. 

        This
Warrant Certificate shall be governed and construed in accordance with the internal laws of the State of New York, without regard to conflicts of laws principles thereof. 

	 	CAPSTAR ACQUISITION CORP.
	

 	

By	
 	

 R. Steven Hicks

Chief Executive Officer
	

Countersigned:

Dated: _________, 2008

CONTINENTAL STOCK TRANSFER & TRUST COMPANY, as Warrant Agent	

 	
 	

 
	

By________________

     Authorized Signatory	

 	
 	

 

 
 

[Form of Warrant Certificate]    
    

 
 

[Reverse]    
    

        The Warrants evidenced by this Warrant Certificate are part of a duly authorized issue of Warrants entitling the holder on exercise to receive shares of Common
Stock and are issued or to be issued pursuant to a Warrant Agreement dated as of [____________], 2008 (the "Warrant Agreement"),
duly executed and delivered by the Company to Continental Stock Transfer & Trust Company, a New York corporation, as warrant agent (the "Warrant
Agent"), which Warrant Agreement is hereby incorporated by reference in and made a part of this instrument and is hereby referred to for a description of the rights, limitation
of rights, obligations, duties and immunities thereunder of the Warrant Agent, the Company and the holders (the words "holders" or
"holder" meaning the registered holders or registered holder) of the Warrants. A copy of the Warrant Agreement may be obtained by the holder hereof upon
written request to the Company. Defined terms used in this Warrant Certificate but not defined herein shall have the meanings given to them in the Warrant Agreement. 

        Warrants
may be exercised at any time during the Warrant Exercise Period set forth in the Warrant Agreement. The holder of Warrants evidenced by this Warrant Certificate may exercise
them by surrendering this Warrant Certificate, with the form of election to purchase set forth hereon properly completed and executed, together with payment of the Exercise Price as specified in the
Warrant Agreement (or through "cashless exercise" if permitted by the Warrant Agreement) at the principal corporate trust office of the Warrant Agent. In the event that upon any exercise of Warrants
evidenced hereby the number of Warrants exercised shall be less than the total number of Warrants evidenced hereby, there shall be issued to the holder hereof or his assignee a new Warrant Certificate
evidencing the number of Warrants not exercised. No adjustment shall be made for any dividends on any Common Stock issuable upon exercise of this Warrant. 

        Notwithstanding
anything else in this Warrant Certificate or the Warrant Agreement, no Warrant may be exercised unless at the time of exercise (i) a registration statement
covering the Warrant Shares to be issued upon exercise is effective under the Act and (ii) a prospectus thereunder relating to the Warrant Shares is current. In no event shall the Company be
required to issue unregistered shares upon the exercise of any Warrant. 

        The
Warrant Agreement provides that upon the occurrence of certain events the number of Warrant Shares set forth on the face hereof may, subject to certain conditions, be adjusted. If,
upon exercise of a Warrant, the holder thereof would be entitled to receive a fractional interest in a share of Common Stock, the Company will, upon exercise, round up or down to the nearest whole
number of shares of Common Stock to be issued to the Warrant holder. 

        Warrant
Certificates, when surrendered at the principal corporate trust office of the Warrant Agent by the registered holder thereof in person or by legal representative or attorney duly
authorized in writing, may be exchanged, in the manner and subject to the limitations provided in the Warrant Agreement, but without payment of any service charge, for another Warrant Certificate or
Warrant Certificates of like tenor evidencing in the aggregate a like number of Warrants. 

        Upon
due presentation for registration of transfer of this Warrant Certificate at the office of the Warrant Agent a new Warrant Certificate or Warrant Certificates of like tenor and
evidencing in the aggregate a like number of Warrants shall be issued to the transferee(s) in exchange for this Warrant Certificate, subject to the limitations provided in the Warrant Agreement,
without charge except for any tax or other governmental charge imposed in connection therewith. 

        The
Company and the Warrant Agent may deem and treat the registered holder(s) thereof as the absolute owner(s) of this Warrant Certificate (notwithstanding any notation of ownership or
other writing hereon made by anyone), for the purpose of any exercise hereof, of any distribution to the
holder(s) hereof, and for all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary. Neither the Warrants nor this Warrant Certificate entitles
any holder hereof to any rights of a stockholder of the Company. 

Election
to Purchase 

(To
Be Executed Upon Exercise Of Warrant) 

        The
undersigned hereby irrevocably elects to exercise the right, represented by this Warrant Certificate, to receive ____________ shares of Common Stock and herewith tenders payment for
such shares to the order of Capstar Acquisition Corp. in the amount of $____________ in accordance with the terms hereof. The undersigned requests that a certificate for such shares be registered in
the name of ____________, whose address is ____________ and that such shares be delivered to ____________ whose address is ________________________. If said number of shares is less than all of the
shares of Common Stock purchasable hereunder, the undersigned requests that a new Warrant Certificate representing the remaining balance of such shares be registered in the name of ____________, whose
address is ____________, and that such Warrant Certificate be delivered to ____________, whose address is ____________. 

	

Date:____________, 20__	
 	

 (Signature)
	

 	
 	

    
    
    
 (Address)
	

 	
 	

 (Tax Identification Number)
	

Signature Guaranteed:	
 	

 

________________________________________________

THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE
MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15). 

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Exhibit 4.3

THIS WARRANT WILL BE VOID IF NOT EXERCISED PRIOR TO 5:00 P.M. NEW YORK CITY TIME, ____________, 2012

CAPSTAR ACQUISITION CORP. Incorporated Under the Laws of the State of Delaware

Warrant Certificate

[Form of Warrant Certificate]

[Reverse]

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