Raja Hasan comes from the desert city of Bikaner, Rajasthan. He considers his father Rafik Sagar (folk singer) and his grandfather Allah Rakha Khan as his gurus in singing.

Raja Hasan was a runner up in the reality TV show Sa Re Ga Ma Pa Challenge 2007 and winner of Ek Se Badhkar Ek on Zee TV, Ustaado Ke Ustad on Sony and IPL Rock Star on the Colors channel.