アンハッピーリフレイン (Unhappy Refrain) is Genjitsutouhi-P's first full-length album. The album contains 21 tracks, split into 2 discs. Disc 1 features 14 tracks, all sung by Hatsune Miku and Megurine Luka. Disc 2 features 7 tracks that are remixes of the tracks in disc 1. They were mixed and uses vocals of other well-known producers, like acane_madder and Dixie Flatline. There are several notable songs are in this album, including Unhappy Refrain and World's End Dancehall. * Disc 1: #1-14 * Disc 2: #15-21