ダイアモンド クレバス 50/50 (Diamond Crevasse 50/50)
May'n (Ft. Megumi Nakajima)
Diamond Crevasse 50/50 is found on the Macross Frontier VOCAL COLLECTION Nyan Tama♀ album as track #2 of the second disc. This is a duet with Nakajima Megumi used as the ending theme of episode 15.