The Barr Brothers will perform tonight on Late Show with David Letterman and in turn will have to cancel their show at the Boot & Saddle in Philadelphia. The band, in a statement posted to their Facebook page, says they will makeup the show in March and will honor all tickets. Refunds are also available from point of purchase.

The band, currently touring in support of their latest Sleeping Operator, will make stops in New York and Cambridge, MA before heading out West for a run that stretches into December.

Late Show with David Letterman airs at 11:35 PM on CBS.