Punjabi, highly acclaimed Indian playback singer whose songs have been featured in numerous Hindi, Kannada and Telugu movies. Also acted in a few Hindi movies. Began his singing career at the age of three, when he joined his father on stage to sing Mohammad Rafi's "Kya Hua Tera Wada"

Sonu Nigam is the correct answer. He began singing at age 3, performed with his father Agam Kumar Nigam on stage singing Mohammad Rafi's 'Kya Hua Tera Wada,' and is a versatile Punjabi playback singer who has worked in Hindi, Kannada, and Telugu films. Mika Singh and Daler Mehndi are also Punjabi but didn't start at age 3. Jagjit Singh was a ghazal singer, not a Bollywood playback singer.