Nickel Creek was an American acoustic musical group. Although the group's music has roots in bluegrass, Nickel Creek now calls itself "progressive acoustic". The band has three people: Chris Thile (mandolin), Sean Watkins (guitar), and Sara Watkins (violin). A fourth member also plays bass with the band. Chris Thile's father Scott Thile, Byron House, and Derek Jones have played bass with the group. Mark Schatz has played bass with Nickel Creek since 2003. The band has played songs by Radiohead, Elliott Smith, Bob Dylan, and even "Toxic" by Britney Spears. However, most of the songs the band play are originals.