After graduating from Fox Chapel Area High School and attending Berklee College of Music in the early 1980s, he played in Fiona's backing band and became an accomplished studio musician, working with the likes of Howard Jones, Chaka Khan, The Bee Gees, Twisted Sister, and Roger Daltrey, among others, showcasing Beach's ability to adapt to various musical styles.

The band also released a number of hit singles, including "Seventeen", "Madalaine", "Headed for a Heartbreak" and "Miles Away".

A "supergroup" project called The Mob with King's X frontman dUg Pinnick and Night Ranger drummer Kelly Keagy resulted in a single self-titled album, released in 2005.

He replaced Jeff Watson in Night Ranger for a series of dates in Japan and the US, but announced his departure in January 2008.

According to bandmate Kip Winger, Reb is quite adept at coming up with multiple rock riffs at a time, though he is often unable to remember them later.