( Rolling Stone ) -- For the first time since the Rolling Stones formed nearly 50 years ago , Mick Jagger is part of a new band : Super Heavy -- featuring Dave Stewart , Joss Stone , Damian Marley and Indian film composer A.R . Rahman . The band has quietly been recording together over the past 18 months , with their debut LP planned for sometime around September . `` It 's different from anything else I 've ever been involved in , '' Jagger tells Rolling Stone . `` The music is very wide-ranging -- from reggae to ballads to Indian songs in Urdu . '' Choose Rolling Stone 's Cover : The Sheepdogs vs. Lelia Broussard . Vote Now ! The group got its start two years ago when Dave Stewart called Jagger from his home in Jamaica . `` I live in Lime Hall right above St. Ann 's Bay , '' says Stewart . `` It 's kind of the jungle , and sometimes I 'd hear three sound systems all playing different things . I always love that , along with Indian orchestras . I said to Mick , 'How could we make a fusion ? ' We were talking about an experiment , and then we started talking about voices . It was all born from that conversation . '' Jagger loved the idea , and after lots of brainstorming and phone calls around the world , they settled on Stone , A.R . Rahman and Marley - whose rhythm section helped flesh out the band . `` We wanted a convergence of different musical styles , '' says Jagger . `` We were always overlapping styles , but they were nevertheless separate . '' About 18 months ago , the band gathered in a Los Angeles studio . None of them had prepared any music . `` We did n't know what the hell we were doing , '' says Stewart . `` We were just jamming and making a noise . It was like when a band first starts up in your garage . Sometimes Damien would kick it off and then Joss would sing something on top of it . We might have a 22 minute jam , and it would become a six minute song . '' Photos : Rare and Intimate Pictures of the Rolling Stones . The loose method was inspiring for Jagger . `` One of the beauties is that , just speaking as a vocalist , I did other things , '' Jagger says . `` I played guitar and harmonica , but there 's four vocalist on the album . Not everything was reliant on me . '' The band 's name came from some improvised vocals by Marley . `` He was just singing 'Heavy , heavy , heavy , heavy , super heavy , ' '' says Stewart . `` We thought that sounded good and it sort of stuck with us . '' Jagger is confident that Stones fans will embrace the group . `` It is a different kind of record that what people would expect , '' he says . `` It 's not all weird and strange though . I think Stones fans will think it 's a bit odd , but they 'll find most of it accessible . They 've heard me play harmonica before and a lot of it is pretty high energy . '' Photo Gallery : The Rolling Stones Live , 1964-2007 . As of now , there are no plans to bring Super Heavy on the road . `` We 're experimenting at the moment and just taking it day by day , '' says Stewart . `` I think if we 're rehearsing and it sounds great and people love the idea then nobody would rule out the possibility of it . '' Might Jagger 's other group be hitting the road at some point in the future ? In an interview with USA Today , Keith Richards said he was optimistic . `` Something 's blowing in the wind , '' he said . `` The idea 's there . We kind of know we should do it , but nobody 's put their finger on the moment yet . This is what we want to ask each other : Do we want to go out in a blaze of glory ? We can , if Mick and Charlie feel like I do , that we can still turn people on . We do n't have to prove nothing anymore . I just love playing , and I miss the crowd . '' When asked if the Stones are going to tour next year , Jagger just chuckles . `` I do n't have any announcement to make at the moment , '' he says . `` I 'm just , uh , ya know ... just doing this right now . '' Copyright © 2011 Rolling Stone .
Jagger 's Super Heavy features Dave Stewart , Joss Stone , Damian Marley and A.R . Rahman . The group got its start two years ago when Dave Stewart called Jagger from Jamaica . They recorded a song together in the studio that was released on iTunes as