Ehsaan Noorani and Loy Mendonsa first met in 1989 at the shoot of an ad film. Back then Loy worked for television and Ehsaan worked with music directors Laxmikant-Pyarelal, Kalyanji-Anandji and Louis Banks among others. The duo got together to compose for ad jingles. They were also part of the band Instant Karma which released redone versions of RD Burman songs in 2002. Loy Mendonsa has also collaborated with Swarathma, a Bangalore based folk rock band. Their first foray into Bollywood was with the film Dus, and ever since they've composed for such hit films as Dil Chahta Hai, Taare Zameen Par, Zindagi Milegi Na Dobaara.
As record producers and instrumentalists, the duo have composed music for over fifty films along with composer-singer Shankar Mahadevan. Ehsaan's grasp over western rock and Loy's gift with the electronic synthesizer has given Bollywood countless chartbusters. Apart from films, they have also composed the song 'De Ghuma Ke', the ICC World Cup anthem. Ehsaan is arguably the best guitarist in the country and Loy is a pro on the keys and bass. Ehsaan is also the first Indian to have a signature line of guitars from the famous guitar company Fender. Over the past fifteen years, the duo have won several awards including a National Award for Best Music Director for Kal Ho Na Ho and the Years of Excellence award at the Annual Rock Awards at Hard Rock Cafe, Mumbai.