Nakagawa Akiko
- tsuki ni Humming
- SVWC-7146 : Yokohama Kaidashi Kikou 2 (Yokohama Kaidashi Kikou)
- SVWC-7147 : Yokohama Kaidashi Kikou Best Soundtracks (Yokohama Kaidashi Kikou)
- yume no miyako Tokyou Life
- PSCR-6131 : Happy Lesson "Melody" (Happy Lesson)
- yuuki no Sneaker
- KSCA-29145 : Happy Lesson Hara Hara Music (Happy Lesson)