4:20 Flashback: Getting the band back together

420 Flashback 6-12-19
Pink Floyd announced they would reunite with former bassist Roger Waters, who left the band in 1985, on July 2, 2005. This would be the first time the band had played together as a quartet since The Wall tour in 1981. What was the event?
Answer: Live 8 London concert. This was one of a series of concerts on the 20th anniversary of Live Aid and scheduled right before the G8 conference.​