Boston-based bluegrass revisionists Crooked Still raised eyebrows on the roots circuit in the early 2000s with their cello-banjo-upright bass-fiddle format and the sneaky-but-tasteful touches of such non-trad, outside styles as rock, pop, and even funk. Some of the group's members have also found fame apart from the unit: singer Aoife O'Donovan as a solo artist and with folk-noir trio Sometimes Why; banjoist Gregory Liszt with Bruce Springsteen's The Seger Sessions project; and fiddler Brittany Haas on NPR's "Live from Here." Although the band officially split in 2011, the players have reunited on rare occasions—such as a string of shows this month that includes an evening at The Egg.
