Since Michael Ivey is one of the progenitors of hiphop singsong, it’s no surprise that he tapped Clarence Greenwood to collaborate on Basehead’s Faith and the related b.y.o.b. project. Greenwood—otherwise known as Citizen Cope, which is also the name of his band—writes fat-bottomed street ballads for the age of samplers and AKs. Cope’s currently shopping a concept album in a haunting modern folk-blues style that’s sensitive to grooves, stories, and living right on the down-and-out. It’s gripping even as a scratchy demo; in fact, I think that adds something. Fresh Irish pop trio the Frank & Walters opens at 9:30 p.m. at the Black Cat, 1831 14th St. NW. $6. (202) 667-7960. (Brett Anderson)