DIRTY CELLO concert now available On Demand through Feb. 28 From Purple Haze to the Orange Blossom Special. Dirty Cello is all high energy fun. This four-member band is perfect for starting up a funky, electric dance party in the comfort and safety of your own home. Vivacious Rebecca Roudman plays the cello like it was a lead guitar and she sings like a rock star with attitude. Her group has played all over the world putting a highly danceable and original spin on blues and bluegrass.