Complex sentence: Despite these successes, he received little public attention in the next ten years (save for "Say It Ain't So Joe" from 1975), reappearing in the spotlight in 1984 as the star of the musical, "Chess".
Split into simpler sentences: Despite these successes, he received little public attention in the next ten years (save for the single "Say It Ain't So Joe" from 1975). He reappeared in the spotlight in 1984 as the star of the musical, "Chess".