Complex sentence: In the'90s, Russo chose to go out on his own and plays regularly with The Doobie Brothers, and his replacement, Bob Mintzer (on tenor and bass clarinet), added more jazz credibility to the group's music.
Split into simpler sentences: In the'90s, Russo chose to go out on his own and plays regularly with The Doobie Brothers. His replacement, Bob Mintzer (on tenor and bass clarinet), added more jazz credibility to the group's music.