Marc Henry Bonilla (born July 3, 1955) 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, toured with Edgar Winter, and produced the recent DVD release .