Song is very good. Very song touch in heart. Ranbir Kapoor, Anushka Sharma and Aishwarya rai Bachchan is very good acting. Shahrukh khan dialogue is very very great. I love this movie. Karan Johar good use old hindi song. It is an infectionally buoyant, emotionally, engaging, and superbly acted drama that could disarm even the most inveterate of cynic. Ultimate it is screenplay good. It is bright and breezy. Good movie just like Rockstar.