Complex sentence: Singer John Joseph subsequently parted ways with the band, leaving bass player Harley Flanagan to sing on the following Cro-Mags release, "Best Wishes" (1989), which had a more heavy metal-influenced sound.
Split into simpler sentences: Singer John Joseph would part ways with the band, leaving bass player Harley Flanagan Harley to sing on the following Cro-Mags release. After "The Age of Quarrel", the band released the record "Best Wishes" (1989), which had a more heavy metal-influenced sound.