Complex sentence: He has been a member of four successful rock bands: the Eagles, the James Gang, Barnstorm, and Ringo Starr & His All-Starr Band, and in the 1990s, he was also a member of the short-lived supergroup The Best.
Split into simpler sentences: He has been a member of four successful rock bands: the Eagles, the James Gang, Barnstorm, and Ringo Starr & His All-Starr Band. In the 1990s, he was also a member of the short-lived supergroup The Best.