収録内容

[Disc 1]

1. birthday / ﾀﾞｲｽｹ

2. HAPPY / ﾀﾞｲｽｹ

3. birthday (Instrumental) / ﾀﾞｲｽｹ

[Disc 2]

1. せかいにひとつのﾌﾀﾘ (Music Video)

2. HAPPY/birthday (Making of Music Video & Sleeve Photo Session2)