12STARS is a compilation album by . It contains 12 tracks, all sung by GUMI. Notable songs such as Noboru↑-P's "恋はきっと急上昇☆ (Koi wa Kitto Kyuujyoushou)", Toku-P's "blue bird", and 40mP's "青空ライン (Aozora Line)" are featured. It was first released at THE VOC@LOiD M@STER 10.

Released November 15, 2009
Producer Various
Price ¥1,000
Illust. 九藤咲織
Track list
1. Wanderland
Meronteii-P feat. GUMI
2. transient dream
otetsu feat. GUMI
3. 赤い雨
Akai Ame / Red Rain
buzzG feat. GUMI
4. final letter
Darvish-P feat. GUMI
5. ナナメ・ワールド
Naname World
Tsurutsuru-P feat. GUMI
6. 恋はきっと急上昇☆
Koi wa Kitto Kyuujyoushou☆ / Love will Surely Soar☆
Noboru↑-P feat. GUMI
7. Liberty Heart
Peperon-P feat. GUMI
8. 雨つぶDANCE
Ame Tsubu DANCE
Captain Mirai feat. GUMI
9. ヴァルキュリア
tomn (Ikarosu-P) feat. GUMI
10. スターマイン
Star Mine
Nem feat. GUMI
11. blue bird
Toku-P feat. GUMI
12. 青空ライン
Aozora Line / Blue Skyline
40meterP feat. GUMI
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