27 October,2013 01:53 AM IST | | AFP
"It's not really... it's music, but it's more like melodies, no singing, so no Justin Bieber. I think that was on your iPod," he told Rosberg.
"In the end, it's not a secret, it's just music that gets me in the zone so that I hopefully get the best out of myself," he added.u00a0