The annual Bluegrass Festival at Calico returns for one day only on Saturday, May 11, with a musical lineup of traditional and progressive bluegrass headliners, such as emerging L.A. – based folk-rock bands, Rose’s Pawn Shop and Southern California Roots music scene group The Storytellers, as well as the all-women old-time string band Lilies of the West, who have been performing American traditional, Celtic and Bluegrass music since the 1980s.