Complex sentence: However, he was unable to make money from his records, so he left King for Savoy Records in 1955, but retired from the music industry in 1960 because he had lost his passion for music.
Split into simpler sentences: However, he was unable to make money from his records, so he left King for Savoy Records in 1955. He retired from the music industry in 1960, having lost his passion for music.