His first Bollywood break was with A. R. Rahman on the film Delhi-6 which he recorded at Rahman's personal studio. Rahman invited King, to his London home after friends sang his praises. He was so impressed with the 25-year-old's voice, he flew him to Chennai to record in his private studio. Since then he has gone on to sing Te Amo for the film Dum Maaro Dum, I Love You for the film Bodyguard and featured on Suno Aisha from the film Aisha. Ash Featured on Lady Gaga's official single for Bad Romance on a remix of Just Dance, this was also used in the remix album and the Asian release of the album. Ash is also a prominent singer in the UK, having sung and co-written the song Love Is Blind which he sang with singer Ramzi and featured on the song Look For Me with Hard Kaur. In 2011, Ash performed at some of the biggest events in the U.K including performances at Glastonbury Festival for the BBC and also performed on the main stage at the BBC London Mela. After 2011, in 2012 Ash was appointed for a Bengali song "Kothin" of Bojhena Shey Bojhena film. He also took part in MTV India's prestigious 'MTV Unplugged' - Series 2, with a whole episode dedicated to his hits. Other performers included A R Rahman, Sunidhi Chauhan and Shafqat Amanat Ali Khan. In April 2013 he headlined a concert at the prestigious Southbank Centre in London, alongside Sufi/Bollywood singer Harshdeep Kaur.