Question: Who wrote the musical in which Edwin Gagiano won a Best Actor Award? 

Context articles: Avtaar
The Last Hurrah (1958 film)
Back to the 80s (musical)
Shabbir Jan
Peter Finch
List of awards and nominations received by Vikram
Vinod Kovoor
Edwin Gagiano
Jean-Louis Trintignant
Daniel Auteuil

Avtaar is a 1983 film starring Rajesh Khanna and Shabana Azmi.
 It was directed by Mohan Kumar, and the music was by Laxmikant Pyarelal.
 Rajesh Khanna did achieve success from "Amardeep" and "Prem Bandhan" onwards, but this was Rajesh Khanna's biggest hit film in terms of box office collections after his bad phase from 1976 to 1978.
 Avtaar was a commercial hit, and was critically acclaimed.
 It also earned several Filmfare nominations.
 However Rajesh Khanna missed the Best Actor award to Naseeruddin Shah for Masoom.
 In 1986 Mohan Kumar made Amrit with Rajesh Khanna in the lead as an old man but with different story line.
 Rajesh Khanna bagged All-India Critics Association (AICA) Best Actor Award for his performance in this film for the year 1983.
The Last Hurrah is a 1958 film adaptation of the novel "The Last Hurrah" by Edwin O'Connor.
 The picture was directed by John Ford and stars Spencer Tracy as a veteran mayor preparing for yet another election campaign.
 Tracy was nominated as Best Foreign Actor by BAFTA and won the Best Actor Award from the National Board of Review, which also presented Ford the award for Best Director.
Back to the 80's [sic] is a musical written by Neil Gooding with the original musical adaption made by Scott Copeman.
 It was later re-orchestrated and arranged by Brett Foster in 2003, just prior to the Australian Production.
 It was originally staged by Neil Gooding Productions Pty Ltd in Sydney, Australia in 2004.
 It is a popular show for school productions in the English speaking world.
Shabbir Jan is a Pakistani television actor who has appeared in many drama serials, such as Wafa, "Makan", "Andata", Survival of a Woman, "Zindagi Dhoop Tum Ghana Saya", "Umrao Jaan", "Jangloos" and "Shab e Gham" and individual play and serials.
 He won three times PTV best actor award.
 He has been a nominee once for the Best Actor award in the Lux Style Award, 2002.
 He has worked television for 33 years and still working.
Frederick George Peter Ingle Finch (28 September 191614 January 1977) was an English-born Australian actor.
 He is best remembered for his role as "crazed" television anchorman Howard Beale in the film "Network", which earned him a posthumous Academy Award for Best Actor, his fifth Best Actor award from the British Academy of Film and Television Arts, and a Best Actor award from the Golden Globes.
 He was the first of two persons to win a posthumous Academy Award in an acting category, and coincidentally also the first of the two Australian actors to have done so, the other being Heath Ledger.
Vikram is an Indian Tamil film actor.
 After making his cinematic debut in the 1990 film "En Kadhal Kanmani", he acted in a series of small-budget Tamil, Telugu and Malayalam films.
 It was Bala's tragedy film "Sethu" (1999) that established Vikram in the Tamil film industry.
 In the early 2000s Vikram appeared in a series of masala films—"Dhill", "Gemini", "Dhool" and "Saamy" all becoming commercially successful.
 During this period, Vikram performed diverse roles and received critical acclaim for his performances in "Kasi" and "Samurai".
 In 2003, Vikram's performance as an autistic gravedigger in "Pithamagan" won a lot of acclaim and secured his first National Film Award for Best Actor.
 His portrayal as an innocent man with multiple personality disorder in Shankar's "Anniyan" was commercially successful.
 The film also fetched him a Filmfare Best Actor Award.
 Vikram's portrayal as a tribal leader in Mani Ratnam's "Raavanan" saw him secure further acclaim.
 He is only the third actor to receive a National Film Award for Best Actor in the Tamil film industry.
 Vikram is known for his intense performances, with his work often fetching critical acclaim and commercial success.
 He has won a National Film Award and seven Filmfare Awards South, of which five are Best Actor awards.
Vinod Kovoor is an Indian film actor best known for his work in Malayalam cinema.
 He got fame with his role Moidu in the popular comedy show "Marimayam" broadcast by Mazhavil Manorama, which conveys a real picture of public offices in Kerala.
 He is also known for his role as "Moosakka" in "M80 Moosa", a serial in Media one channel.
 He has written books on his favorite realm mimicry and mono-act.
 His first book "Ekabhinaya Samaharam" has 25 scripts, and most of it deals with social issues and his second book "Kalolsavam Monoact" was also released.
 He got Best actor Award for the short film "Athe Karanathal" from the National Film Festival.
 He was best actor for consecutively four years in Kerala Kalolsavam.
 He won best Excellency award by Rotary, J.C.I.
 He also received Best Television Anchor Award by K.C.L, Best Comedy artist Award by Kerala Hasyavedi, Kazhcha Award and Best child artist award for the drama "Chandrolsavam" in Kambissery Nadakolsavam .
His achayan role in the super hit short film "Nerariyathe" critically acclaimed.
Edwin Gagiano (born June 1, 1989) is a South African-born actor, screenwriter, producer, singer/songwriter and model based in Los Angeles, California.
 He is regarded as one of South Africa’s highest-earning actors by The New Age and has won several awards for his achievements, including Best Actor Award for his role as Alf Bueller in the show "Back to the 80s".
Jean-Louis Xavier Trintignant (] ; born 11 December 1930) is a French actor, screenwriter and director who has enjoyed international acclaim.
 He won the Best Actor Award at the 1969 Cannes Film Festival as well as the Best Actor Award at the César Awards 2013.
Daniel Auteuil (] ; born 24 January 1950) is a French actor and director who has appeared in a wide range of film genres, including period dramas, romantic comedies, and crime thrillers.
 In 1996, he won the Best Actor Award at the Cannes Film Festival together with Belgian actor Pascal Duquenne.
 He is also the winner of two César Award for Best Actor, one in 1987 as Ugolin Soubeyran in "Jean de Florette" and "Manon des Sources" and another one for his role in "Girl on the Bridge".
 For his role in "Jean de Florette", he also won the BAFTA Award for Best Actor in a Supporting Role.
 Auteuil is considered one of France's most respected actors.