Marc Bonilla is an American guitarist and composer. He has worked with Keith Emerson (including on 1995's Changing States and in 2006-2016 was featured in the Keith Emerson Band), Ronnie Montrose, Glenn Hughes (on Addiction (produced, co-written and performed), The Way It Is, 1999, also playing keyboards), David Coverdale (late 2000 live band) and Kevin Gilbert (Toy Matinee live band). He also appears on the Emerson, Lake & Palmer tribute album Encores, Legends & Paradox (Magna Carta Records, 1999) and a spoken word album with comedian Bobby Gaylor for Atlantic entitled "Fuzzatonic Scream" including the controversial single, "Suicide" in 1998.
He has released a number of solo albums. Among them, EE Ticket (Reprise, 1991), and American Matador (Warner Brothers, 1993), which includes covers of "A Whiter Shade of Pale" and "I Am the Walrus" with guest Ronnie Montrose. Bonilla currently plays in California Transit Authority, a project led by former Chicago drummer, founding member and Rock n' Roll Hall of Famer Danny Seraphine, featuring some updates to early Chicago songs as well as new material and has currently completed the follow-up album of all original material. He has also produced, co-written and performed with the Keith Emerson Band's new album. In addition, he tours with Eddie Jobson's UZ Project as singer, guitarist and bassist.