Question: Which Pakistani singer sun the Theme Song 'Agar Shukk Dil Mein Ajaye' 

Context paragraphs:
Sahir Ali Bagga: Sahir Ali Bagga (Urdu: ساحر علی بگا‎ ) is a Pakistani singer, music director and composer from Lahore, who composes music for Lollywood and other independent singers.  Recently he has composed music for the Pakistani movie, "Zinda Bhaag (2013)".  He also worked on the soundtrack of Pakistani movies, "Hijrat" and "Tamanna", contributing two songs to the latter; Koi Dil Mein and Chell Oi.  He has also composed music of Hum TV's Ishq-e-Benaam.

Shaq (film): Shaq (also known as Shukk), is a 2013 Pakistani mystery drama, aired on ARY Digital, and directed by Yasir Nawaz.  It starred Adeel Hussain, Sanam Saeed, Ayesha Khan played the leading roles and Syed Jibran also played a pivotal role.  Its theme song "Agar Shukk Dil Mein Ajaye" was sung by Nabeel Shaukat Ali and Alycia Dias.  The drama was a big hit and includes in the highest rated Pakistani serial.

Dulhan Ek Raat Ki: Dulhan Ek Raat Ki (Bride for One Night) is a 1967 Bollywood film starring Dharmendra, Nutan and Rehman, the same trio who did 'Dil ne Phir Yaad Kiya'.  The songs from this film became hit.  'Sapnon Mein Agar Mere', 'Ek haseen shaam ko dil mera kho gaya', 'maine rang li aaj chunariya', 'kai din se jee hai bekal' are evergreen numbers.

Kkoi Dil Mein Hai: Kkoi Dil Mein Hai is an Indian television romantic comedy series that aired on Sony Entertainment Television.  The series premiered in December 2003 and ended its run in 2005.  The show starred Eijaz Khan and Poorva Gokhale in lead roles.  The opening theme song was sung as a duet by famous singers Shreya Goshal and Sunidhi Chauhan.  The show garnered some controversy for featuring a scene of marital rape.

Aap Ki Parchhaiyan: Aap Ki Parchhaiyan (English: "Your Shadows") is a 1964 Bollywood film.  Produced and directed by Mohan Kumar the film stars Dharmendra, Shashikala, Supriya Choudhury, Om Prakash and Manorama.  The film's music is by Madan Mohan.  A couple of songs 'Main nigahen tere chehre se hataaoon kaise' by Mohd.  Rafi and 'Agar mujhse mohabbat hai' by Lata Mangeshkar are plus points of this family drama.

Ek Kunwari Ek Kunwara: Ek Kunwari Ek Kunwara is a 1973 Bollywood drama film directed by Prakash Mehra.  The film stars Leena Chandavarkar, Rakesh Roshan, Pran, Kumkum and Rajendra Nath.  Two of the songs namely, 'Agar dil hamara sheeshe ke badle patthar ka hota' sung by Kishore Kumar and Chal Diye Tum Kahan sung by Rafi and Asha are still popular.  The film although had a nice story and good acting by main cast Pran, Leena, Rakesh Roshan and Kumkum, did well at the box office.

Nabeel Shaukat Ali: Nabeel Shaukat Ali (born August 29) is a Pakistani singer.  He contested in Sur Kshetra, a singing talent show the musical battle between teams of two neighboring countries: Pakistan and India aired simulcast on Geo TV, Sahara One, Colors TV, AAG TV as well as Rishtey.  He ultimately came first in the finals and was declared the winner of the show.

Kadhalar Dhinam: Kadhalar Dhinam (English: "Valentine's Day" or "Day of Love" ), titled Dil Hi Dil Mein (English: "Only Heart is in Heart" ) in Hindi is an Indian Tamil-Hindi bilingual romance film directed by Kathir.  It is based on a relationship which begins through an internet chatroom and takes a turn after the protagonist has second thoughts about the relationship.  The film featured newcomer Kunal Singh and Sonali Bendre in the lead roles, while Nassar, Manivannan, Goundamani and Chinni Jayanth appeared in supporting roles.  The film produced by A.M. Ratnam, had music composed by A. R. Rahman and cinematography by P. C. Sriram.  The Tamil film was released in 1999 and became a huge commercial success.  The songs in the movie itself won great credits.  The Hindi version was released in 21 April 2000.

Shikari (1963 film): Shikari (English: "The Hunter") is a hit Hindi movie directed by Mohammed Hussain and was released in 1963.  The actors are Ajit, Ragini, Helen, Madan Puri, K N Singh, Tun Tun, Kamal Mehra, and others.  The music of the film was the biggest asset of this film, and the songs 'O, tumko piya, dil diya', 'mangi hain duaayen', 'ye rangeen mehfil', 'agar main poochhoon', had catchy tunes to become popular on the music-chart of the year.

Raqesh Vashisth: Raqesh Vashisth is an Indian actor and model.  He was the runner up in the 1999 Grasim Mr. India contest, and first runners-up at the Mr Intercontinental.  He was in television commercials for Colgate and Wrigley's gum.  He played Aditya in the show "".  His advertisement roles led to Bollywood film roles, starting with the movie "Tum Bin" in 2001 and including "Dil Vil Pyar Vyar" and "Koi Mere Dil Mein Hai".  However, the movies he featured in were not commercially successful or were not released at all.  He made his television debut in the serial "Saat Phere".  He played Aditya in "", Rohan Mishra in "Hongey Judaa Na Hum" and Shlok in "Seven".  Vashisth replaced Karan Singh Grover in "Qubool Hai" in January 2014, but did not continue with that series when it made a time leap in early 2014.

Supporting paragraphs: Shaq (film) Nabeel Shaukat Ali
Answer: Nabeel Shaukat Ali