Dave Grohl of the Foo Fighters performs at the 9:30 Club in Washington D.C. as part of the birthday celebration for Big Tony of Trouble Funk. Kyle Gustafson/Washington Post/Getty images hide caption

itoggle caption Kyle Gustafson/Washington Post/Getty images

Public Service Broadcasting's new album, Inform - Educate - Entertain, comes out Nov. 19. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Lucius was just one of the many bands worth discovering at this year's CMJ festival. Becky Harlan/NPR hide caption

itoggle caption Becky Harlan/NPR