Complex sentence: Two American musicians were brought into the lineup at this point; keyboardist/guitarist Jonathan Cain replaced Corby, and bassist Ricky Phillips (of "Nasty Habit") joined in 1979, making the band a 5-piece.
Split into simpler sentences: Two American musicians were brought into the lineup at this point. Keyboardist/guitarist Jonathan Cain replaced Corby, and bassist Ricky Phillips (of "Nasty Habit") joined in 1979, making the band a 5-piece.