Emmylou Harris and guitarist Albert Lee will make guest appearances when Vince Gill, Rodney Crowell and other members of the Notorious Cherry Bombs reunite for an Aug. 21 concert to benefit the Rising Star Music Fund. The nonprofit organization provides grants and funding for children's music programs throughout the U.S. The concert will also honor record executive Bob Mercer, who died in 2010. The Cherry Bombs formed in the early '80s and served as a backing band for Crowell and his then-wife Rosanne Cash. The band lineup for the show at Nashville's 3rd & Lindsley club will include keyboardist Tony Brown, drummer Eddie Bayers, bassist Michael Rhodes and steel guitarist Paul Franklin.