Rising country stars Pat Green and Carolyn Dawn Johnson taped performances for an upcoming episode of CMT's On the Verge at the Country Music Hall of Fame's Ford Theater Tuesday night (Jan. 29). The series documents the career development of up-and-coming artists through concert and interview footage. Green and Johnson, both 30, taped three songs apiece, repeating songs once or twice to give editors more options. Both artists will be showcased in the same hour-long episode, airing March 23 on CMT.