Question: What film was the song for which Sukhwinder Singh won the Best Male Playback Award?

Context articles: Haider (soundtrack)
ARY Film Award for Best Male Playback Singer
Chaiyya Chaiyya
IIFA Award for Best Male Playback Singer
Amit Mishra (singer)
Mohit Chauhan
Sukhwinder Singh
Bengal Film Journalists' Association – Best Male Playback Award
Kharaj Mukherjee
GiMA Award for Best Male Playback Singer

Haider is the soundtrack album, composed by Vishal Bhardwaj, to the 2014 Hindi film of the same name.
 The film, directed by Vishal Bhardwaj, stars Shahid Kapoor, Shraddha Kapoor, Tabu and Kay Kay Menon in key roles.
 The film is produced by Siddharth Roy Kapur and Bhardwaj.
 The soundtrack album features nine tracks, and was released on 15   2014 (2014--) on the record label Junglee Music.
 Vishal Bhardwaj and Sukhwinder Singh won the National Award for Best Music Direction of Songs and Best Male Playback Singer respectively.
The ARY Film Award for Best Male Playback Singer is one of the ARY Film Awards of Merit presented annually by the ARY Digital Network and Entertainment Channel to male playback singer, who has delivered an outstanding performance in a film song while working in the film industry.
"Chaiyya Chaiyya" (English: [walk] in shade ) is an Indian song from the 1998 Hindi film "Dil Se.
.
" directed by Mani Ratnam.
 The song was composed by A.R. Rahman, written by Gulzar, and sung by Sukhwinder Singh and Sapna Awasthi.
 It quickly became popular upon the release and its music video gained cult status, partly because it was filmed on a moving train.
 The Tamil version is called "Thaiyya Thaiyya", which was also popular among Tamils.
The IIFA Best Male Playback Award is chosen by the viewers and the winner is announced at the ceremony.
 Most wins in this category Sonu Nigam
Amit Mishra is an Indian singer, songwriter, voice actor and live performer.
 He became more well-known after the release of the song "Bulleya" sung by him from the film Ae Dil Hai Mushkil; for his rendition of the song he won a Filmfare Award for new music talent, Screen Award for Best Male Playback and IIFA Award for Best Male Playback.
 He got nominated for the same song in different award shows.
 He has also sung in some of Telugu, Bengali and Marathi films.
Mohit Chauhan (born 11 March 1966) is an Indian singer, most known for his work as a playback singer for Bollywood,Tollywood, & Kollywood movies as well as the former front-man of the Indipop band Silk Route.
 He is a two-time recipient of the Filmfare Award for Best Male Playback Singer and three times Zee Cine Award For Best Male Playback Singer as well as several other awards mentioned below.
Sukhwinder Singh (born 18 July 1971) is an Indian Bollywood playback singer.
 Singh is famous for singing "Chaiyya Chaiyya" for which he won the Best Male Playback Award at the 1999 Filmfare Awards.
 The song, from Mani Ratnam's 1998 film "Dil Se.
.
", was composed by A. R. Rahman, written by Gulzar, and sung in duet with Sapna Awasthi.
 It was also featured in the musical "Bombay Dreams" and, in remixed arrangements, in the titles and credits segments of Spike Lee's 2006 film, "Inside Man".
 Singh later gained more international fame for singing "Jai Ho" from the film "Slumdog Millionaire", which won an Academy Award for Best Original Song and a Grammy Award for Best Song Written for a Motion Picture, Television or Other Visual Media.
 His rendition for the 2014 released film "Haider" fetched him the National Film Award for Best Male Playback Singer.
Bengal Film Journalists' Association – Best Male Playback Award
Kharaj Mukherjee or Kharaj Mukhopadhyay (born 7 July 1963) is Bengali actor, songwriter, composer and singer.
 He made his debut in Bengali film with the film "Hulusthul" in 1980.
 In last 32 years he has worked in many films like "Patalghar", "Bye Bye Bangkok", "Kahani", "namesake", "accident", Muktodhara, Special 26, Lafangey Parindey, Yuva, Parineeta, Laga Chunari mein daag, Chhoye chhuti, "Jaatishwar" etc.
 He is a student of the drama maestro Mr. Ramaprasad Banik.
 One of the finest actors in India, he is known for his excellence in both Commercial and natural acting.
 In 2012 film "Kahaani", Mukherjee played the role of Inspector Chatterjee.
 Mukherjee won Bengal Film Journalists' Association – Best Male Playback Award in 2004 for the film "Patalghar".
The GiMA Best Male Playback Singer Award is given by Global Indian Music Academy as a part of its annual Global Indian Music Academy Awards for Hindi films, to recognise a male playback singer who has delivered an outstanding performance in a film song.