Adam Levine has a grand piano in his bedroom.

The Maroon 5 frontman denies he indulges in many rock 'n' roll excesses, but his friend and co-judge on 'The Voice', Blake Shelton, was pretty impressed when he came to his house for the first time.

Blake said: ''The first time I went to Adam's house, I told him, 'Man, you're exactly The Rock star I wanted you to be.' There's a grand piano in his bedroom.

''From his pool outside, you look up the hill and there's the Hollywood sign. I mean, there were models hanging around. It was badass.''

'Moves like Jagger' singer Adam tries to play down the extent of his rock star lifestyle - which includes sporting many tattoos, owning a Porsche 16000 Speedster car and a collection of motorbikes and dating a string of models - but admits to smoking marijuana.

He added: ''I never got down with conveying a larger-than-life vibe. I guess I'm more of a 'houses and weed' guy.''