(Cover) - EN Showbiz - Sir Mick Jagger thought the idea of being in a supergroup was "mad" when he first heard it.

The Rolling Stones frontman has decided to expand his horizons by working with a host of talented musicians including Eurythmics star Dave Stewart, British jazz singer Joss Stone, Bob Marley's son Damian and award-winning Indian musician-and-producer A.R. Rahman.

The stars have created eclectic band SuperHeavy together.

Dave, who came up with the idea of creating the group alongside Mick, has revealed the musician was unsure about the collaboration in the initial stages.

"I said, 'Hey, look, we're going to try this experiment,'" he told USA Today. "Everyone turned up without knowing what it was. Mick said, 'This is mad. We haven't written any songs.' We started jamming, and it was amazing. It got to certain peaks where it was, whoa, this is happening."

The group recorded the 17 tracks in Los Angeles over a three week period. The songs range from dance tracks to a Rahman composition that sees Mick singing in Urdu.

The 67-year-old British singer hopes people embrace the eclectic mix of music genres.

"It's definitely an unknown genre," he said. "But it's accessible and structured. I worry people will think it's some kind of world jam. It's not."

Mick is unsure whether there will be a follow-up record. The singer-and-guitarist is keeping his options open though.

"I know Dave is already talking about the next one," he said. "As far as I'm concerned, it was a one-off thing. But we'll see what happens."

SuperHeavy's self-titled debut arrives September 20 with a fusion of rock, soul, reggae, blues, pop and Indian music.

A promo will be released this month. (C) Cover Media