Conversation so far:
Has the line up changed for Huey Lewis and the News?
The band's lineup has changed moderately since its heyday. Bassist Mario Cipollina left the band in 1995, and was replaced by John Pierce.
Has someone else besides Mario Cipolinna left the band Huey Lewis and the News?
In 2001, Chris Hayes retired to spend more time with his family after performing on the album Plan B.
Why did other members join Huey Lewis and the News?

Question: who filled in
Self-contained rewrite: Who filled in for Stef B Burns on Huey Lewis and the News?