Kajol will feature along with Amitabh and Abhishek Bachchan in a song Rock 'n' Roll Soniye in Karan Johar's 'Kabhi Alvida Na Kehna'. Farah Khan would choreograph the song and it has a few lines from the popular song of the '60s - 'Sar Pe Topi Lal, Haath Mein Resham Ka Romaal...'