Facts: - years active: 1968 -- 1971 , 1994-2015 - landscape: yes - past members: dick cennamo heckstall-smith tony reeves jim roche james litherland louis - caption: colosseum in 2010 - origin: england - label: fontana , vertigo records - genre: jazz blues rock fusion , progressive rock , jazz rock , - name: colosseum - background: group_or_band - image: colosseum2010.jpg - current members: dave mark clarke chris farlowe barbara thompson greenslade jon hiseman dave '' clem '' clempson Based on these bullet points, write a short biography describing the life of colosseum -lrb- band -rrb- .
colosseum were a pioneering english progressive jazz-rock band , mixing progressive rock and jazz-based improvisation .