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".
Matt Cameron Matthew David Cameron (born November 28, 1962) is an American musician who serves as the drummer for the American rock bands Pearl Jam and Soundgarden. After getting his start with the Seattle, Washington-based bands Bam Bam and Skin Yard, he first gained fame as the drummer for Soundgarden, which he joined in 1986 and remained in until the band's break-up in 1997. In 1998, Cameron was invited to play on Pearl Jam's U.S. Yield Tour. He soon became a permanent member and has remained in the band ever since. In 2010, Soundgarden reunited for a tour and released a new album, "King Animal," on November 13, 2012.