Hey guys help me

Actualy na i m nt getting dis song name... In a fire exit, rey remembers abt taani, frm the scene of entrance of taani, thr fal, how she fel on rey arms aftr hearng rey gona teach her dance, each nd evry moment he spent wit hr... Durng dat proces a song was playd? I m nt able to remembr, pls say me na whch sng was dat..nd frm whch film it s?

I think its kuch kam roshan hai roshini... dunno d name of movie ..

KUCH KAM ROSHAN HE ROSHNI FRM DOSTANA