Complex sentence: One of Heaven Seventeen's keyboard players was Ivan Doroschuk, who later formed Men Without Hats Howe later joined Men Without Hats, as a guitarist, prior to forming Rational Youth with Vorn.
Split into simpler sentences: One of Heaven Seventeen's keyboard players was Ivan Doroschuk, who later formed Men Without Hats. Howe also later joined Men Without Hats, as a guitarist, prior to forming Rational Youth with Vorn.