Diamond Rio and the Nitty Gritty Dirt Band are among the country artists releasing new albums on Tuesday (Sept. 22). Diamond Rio's The Reason (Word) is their first contemporary Christian album. The Nitty Gritty Dirt Band's Speed of Life (NGBD Records) is their first studio album in five years. Other new releases include Guy Clark's Somedays the Song Writes You (Dualtone), the Kentucky Headhunters' Live/Agora Ballroom -- Cleveland, Ohio -- May 13, 1990 (Mercury/UMe), Larry the Cable Guy's Tailgate Party (Warner Bros.) and Adam Steffey's One More for the Road (Sugar Hill).