Alan Fitzgerald, U.S. musician (both a bassist and a keyboardist), was a member of several U.S. bands.
In the mid 1970s, he appeared on Montrose albums as a bassist, and later on Sammy Hagar solo albums as a keyboardist.
In 1979 he teamed up again with Ronnie Montrose, appearing on Gamma's first album.
In the 1980s, he was the keyboardist for Night Ranger. Also played keyboards offstage for Van Halen tours in the early 90's and in 2004.