Priyanka Chopra is playing a singer and musician in Raj Kumar Santoshi's 'London Dreams'. She reveals, "What really excites me about this role is that I get to play a singer and a musician. I've nursed a life-long passion for singing. In fact, if I wasn't an actor I'd be a singer. By the way, I'll be learning to play a musical instrument for the film." It also stars Salman Khan and Ajay Devgan. She is really excited working with Santoshi. A R Rehman will score the music for it. Santoshi also have finalized another film with Ajay and Priyanka, which music would have composed by Himesh Reshammiya.