Johnny Cash's younger sister, Joanne Cash, will include three duets with her late brother on a new gospel album to be released Feb. 20. They sing together on "Softly and Tenderly," "Let the Lower Lights Be Burning" and "When He Comes." The album, Gospel, is Ms. Cash's 27th album release and also includes material from her past projects. The duets were recorded in Johnny Cash's cabin studio in Hendersonville, Tenn. The siblings recorded the songs approximately a year and a-half before Johnny Cash died in 2003.