Nickel Creek fiddler Sara Watkins helped The Decemberists kick off its 2011 tour at New York’s Beacon Theater earlier this week. Without much fanfare, Watkins took the stage with the group at the Beacon Theater this past Monday and provided fiddle and vocal accompaniment for most of the band’s set. The Nickel Creek co-founder appeared with the indie rock band once again last night and will perform with The Decemberists throughout its 2011 tour in support of The King Is Dead. The album—which features appearances by Gillian Welch an d R.E.M.’s Peter Buck—debuted at the top of the Billboard charts.