Pink Floyd will reunite for Live 8. The band's classic lineup, including Roger Waters and Dave Gilmour, will play together for the first time since 1981

Live 8 organizer Bob Geldof apparently couldn’t get the Spice Girls back together, but he did pull off the long-rumored reunion of Pink Floyd. The band’s classic lineup will perform together on July 2 at the Live 8 concert in London, marking the quartet’s first live show together in 24 years.

The reunited Pink Floyd will join a lineup at London’s Hyde Park that includes Mariah Carey, Coldplay, The Cure, Dido, Elton John, The Killers, Annie Lennox, Madonna, Paul McCartney, REM, Scissor Sisters, Snoop Dogg, Sting, Joss Stone, U2, and Velvet Revolver. Simultaneous all-star concerts are planned in Philadelphia, Paris, Berlin, and Rome. A sixth show is scheduled for July 6 in Edinburgh, Scotland, close to the G8 economic conference of world leaders that gives Live 8 its name and purpose: raising concertgoers’ consciousness and influencing G8 participants to combat poverty in Africa.

Bassist Roger Waters, who wrote most of Pink Floyd’s music and lyrics during the era that saw such classic albums as Dark Side of the Moon (1973) and The Wall (1979), left the band in the mid-80s, then sued the other three members (guitarist-singer Gilmour, keyboardist Richard Wright, and drummer Nick Mason) over their use of the group’s name, since they continued to record and tour as Pink Floyd for the next decade.

”Like most people I want to do everything I can to persuade the G8 leaders to make huge commitments to the relief of poverty and increased aid to the third world,” Gilmour said in a statement on Sunday. ”Any squabbles Roger and the band have had in the past are so petty in this context, and if reforming for this concert will help focus attention then it’s got to be worthwhile.”