Roger Waters was the musical guest on last night’s (June 21) episode of The Late Show with Stephen Colbert – watch him perform a medley of songs below.The former Pink Floyd frontman appeared on the show backed by a full band, a pianist and some backing singers. The medley included ‘The Happiest Days Of Our Lives’, ‘Another Brick In The Wall, Part 2’ and ‘Another Brick In The Wall, Part 3’ from Pink Floyd’s 1979 album ‘The Wall’.The performance comes ahead of his ‘This Is Not A Drill’ tour, which was originally set to begin in 2020 but was postponed due to the coronavirus pandemic.“This Is Not A Drill is a groundbreaking new rock & roll/cinematic extravaganza, performed in the round,” Waters wrote in a statement (via Rolling Stone).