Krishna Kumar Kunnath, better known as KK, still can't get away without singing Tadap Tadap Ke from Hum Dil De Chuke Sanam (1999). Even though he has rendered chart-busters like Tu Hi Meri Shab Hai (Gangster), Khuda Jaane (Bachna Ae Haseeno) and Desi Boyz, he is best remembered for the evergreen soulful rendition in the Salman Khan and Aishwarya Rai-Bachchan starrer. "Every singer has that one number," says the singer, whose latest offering is Tum Na Aaye in Amitabh Bachchan and Taapsee Pannu-starrer Badla.

He is presently working on two tracks for Mahesh Bhatt's upcoming film Sadak 2. The singer has an old association with the Bhatts, having collaborated with them on several projects since Jism (2003). Apart from that, he has also trained his focus on his independent album. It's been a while since he made one after Pal (1999) and Humsafar (2008). "I am still thinking of a title. I keep re-working [it]. I spend hours in the studio. This is what happens when you are the composer and singer of a project. You are never satisfied."