"増殖気味 X≒MULTIPLIES" (Zoshoku Gimi X = (Near Equal) MULTIPLIES) is an album featuring various tracks showcasing MIku's English voicebank, including the demo songs "NICE AGE", a cover of Yellow Magic Orchestra's song, and "DAY TRIPPER" a cover of The Beatles's song (the original is not in capitals). The album also features Miku's Japanese Voicebank, Kagamine Rin, Megurine Luka, and Yuzuki Yukari. The limited edition comes with a DVD (tracks 14, 15, and 16), a framed CD, and a Hatsune Miku Orchestra Nenderoid Petit. The last track is only avaliable in Japan.