Crooked Still is a band consisting of vocalist Aoife O'Donovan, banjo player Dr. Gregory Liszt, bassist Corey DiMario, cellist Tristan Clarridge and fiddler Brittany Haas. They are known for their high energy, technical skill, unusual instrumentation, and innovative acoustic style.The string band's style is variously described as progressive bluegrass, folk-country, and Americana.