New Delhi, Aug 24 (ANI): Singer Rahul Vaidya, who rose to fame with Indian Idol's first season, has remained away from commercial music. He credits his busy schedule for that. Though the singer has not been able to make a mark in the industry so far, he takes pride in being one of the busiest live performers in India. Rahul has lent his voice to T-series new romantic single which stars Ruhi Singh and Karan Kundra. The song, which is called 'Do Chaar Din', is trending high on social media for the lip-lock sequence between the stars.