Matt Thiessen and Lowell George, both are Americans of which common occupation?
Matt Thiessen Matthew Arnold "Matt" Thiessen (born August 12, 1980) is a Canadian-American musician, singer and songwriter known for being co-founder, lead singer, guitarist, pianist, and primary songwriter for the Christian rock band Relient K. With Relient K, he has released eight full-length albums, including three that were certified Gold, and three that peaked in the top twenty on the "Billboard" 200. Outside of his work with Relient K, Thiessen maintains a low-profile side project called Matthew Thiessen and the Earthquakes. In 2009, he co-produced and collaborated on Owl City's album "Ocean Eyes".
Andy Stapp Andrew Dean Stapp (March 25, 1944 – September 3, 2014) formed the American Servicemen's Union, an unofficial union for the US military, in opposition to the Vietnam War. He was married to Deirdre Griswold; both were members of the Workers World Party. Shortly after his birth, Andy was adopted by William and Martha Stapp. For many years, he worked as a history teacher at the Hudson School in Hoboken, NJ.