Complex sentence: Randy went on to become a member of Milwaukee based AOR rock band Crossfire, renamed Bad Boy, which he is still a current member, and also performs numerous events with his band No Strings Attached.
Split into simpler sentences: Randy went on to become a member of Milwaukee based AOR rock band Crossfire (since renamed Bad Boy), of which he is still a member. He also performs numerous events with his band No Strings Attached.