Tin Hat, formerly the Tin Hat Trio, is an acoustic chamber music group currently based in San Francisco. Their music combines many genres of music including southern blues, bluegrass, neoclassical, eastern European folk music, and avant-garde.Since its formation in 1997, the original Tin Hat Trio has often expanded its trio format by inviting other musicians to join them. All of their five CDs feature guests, among them Tom Waits and Willie Nelson, as well as friends like clarinetist Ben Goldberg and harpist Zeena Parkins. Parkins appears on 2002's The Rodeo Eroded, and 2004's Book of Silk and has performed live with the trio as the resident sound effects artist in their live music/silent film projects. Goldberg has been a frequent guest of Tin Hat Trio and contributed to both 1999's Memory is an Elephant as well as to The Rodeo Eroded.When founding member Rob Burger, the trio's accordionist and pianist, left the trio in late 2004, Mark Orton and Carla Kihlstedt replaced him with both
Source:
http://en.wikipedia.org/wiki/Tin Hat