In the same year, at a concert in Birmingham, Rahat performed the solo ghazal, “Mukh Tera Sohneya” and another solo song, “Gin Gin Taare” at a concert in Harrow Leisure Centre in the same year. As a subordinate with his uncle Nusrat, and in collaboration with Eddie Vedder of the American rock band, Pearl Jam, he contributed to the soundtrack of the 1995, Hollywood film, Dead Man Walking. In 1994, along with the composer of orchestral and film music, James Horner, Rahat worked on the soundtrack of The Four Feathers.
  Rahat debuted into Bollywood as a playback singer with the song, “Mann Ki Lagan” (Paap, 2004). Apart from the very many successful albums, Pakistani drama soundtracks, his successful stint in Bollywood includes, “Jiya Dhadak” (Kalyug), “Naina” (Omkara), “Jag Soona” (Om Shanti Om), “Main Jahaan Rahoon” (Namasthey London), “O Re Piya” (Aaja Nachle), “Teri Ore” (Singh is Kinng), “Rishte Naate” (De Dana Dan), “Bahaara” (I Hate Luv Storys), “Tum Jo Aaye” (Once Upon A  Time In Mumbai), “Aankhon Mein Neendein” (We Are Family), “Aas Paas Khuda” (Anjaana Anjaani), “Meri Ada Bhi” (Ready), “Teri meri” (Bodyguard), “Isq Risk” (Mere Brother Ki Dulhan), “Rabba Main To” (Mausam) and many more.

Rahat was the winner of Star Screen Award for Best Male Playback in 2010 for, “Ajj Din Chadheya” (Love Aaj Kal). Rahat won the Mirchi Music Award for the best Song in Sufi Tradition for “Sajda” (My Name Is Khan in 2010). He won the Best International Act in 2010 at the UK Asian Music Awards. Star Screen award and Filmfare award in 2011 for “ Dil to Bachcha hai” (Ishqiya).  He also was the winner of 2011 IIFA Awards for the Best Male Vocalist and Mirchi Awards for, “Tere Mast Mast” (Dabangg). His voice was also on the soundtrack of Mel Gibson’s Apocalypto.

Rahat judged the show, “Chhote Ustaad 2” alongside Sonu Nigam and was also one of the judges on the singing reality show “Junoon - Kuchh Kar Dikhaane Ka”, premiered on NDTV Imagine in 2008.

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