Thomas Harvey "Sean" Bonniwell (August 16, 1940 – December 20, 2011)[1][2] was an American singer-songwriter/guitarist, who was known as the creative force behind the 1960s garage rock band, The Music Machine.

Adopting Beatles-style moptop hair and all-black outfits (and Bonniwell's signature single black leather glove), Music Machine churned out a diversified style of garage rock.

He entered a period of spiritual quest and internal soul-searching, grew a beard, sold everything he owned, and drove around the US in a Volkswagen bus.

[citation needed] In 2006, Bonniwell recorded his first new material in several years, as a guest musician appearing on a self-titled debut album by The Larksmen,[2] a garage rock group from Los Angeles, California.

He appeared on two songs entitled "Burn Like A Boy" (actually written back in 1967 for The Music Machine but never released) and "Out Of Darwin's Mind".