The yet-to-be-launched GEC NDTV Imagine has roped in musician Shankar Mahadevan and creative whiz, lyricist Prasosn Joshi as judges for their musical extravaganza <em> Dhoom Mach De.</em> The jury members along with the votes of the entire nation will adjudge the winner in the ultimate competition to uncover the country's "Best LIVE Performer".