Chou happy song (28/04/2012)
Regular edition
1. Chou happy song (Single ver.)
2. Chou happy song
3. Because happiness (Berryz Kobo)
4. Shiawase no tochuu (°C-ute)
5. Chou happy song (Single ver.) (Original karaoke)
6. Chou happy song (Single ver. with Berryz Kobo vo.) (Original karaoke)
7. Chou happy song (Single ver. with °C-ute vo.) (Original karaoke)
Lien: Mega
Limited edition Type A
1. Chou happy song (Single ver.)
2. Chou happy song
3. Because happiness (Berryz Kobo)
4. Shiawase no tochuu (°C-ute)
5. Chou happy song (Single ver.) (Original karaoke)
6. Chou happy song (Single ver. with Berryz Kobo vo.) (Original karaoke)
7. Chou happy song (Single ver. with °C-ute vo.) (Original karaoke)
Lien: Mega
Limited edition Type B
1. Chou happy song (Single ver.)
2. Chou happy song
3. Because happiness (Berryz Kobo)
4. Shiawase no tochuu (°C-ute)
5. Chou happy song (Single ver.) (Original karaoke)
6. Chou happy song (Single ver. with Berryz Kobo vo.) (Original karaoke)
7. Chou happy song (Single ver. with °C-ute vo.) (Original karaoke)
Lien: Mega
Limited edition Type C
1. Chou happy song (Single ver.)
2. Chou happy song
3. Because happiness (Berryz Kobo)
4. Shiawase no tochuu (Berryz Kobo)
5. Chou happy song (Single ver.) (Original karaoke)
6. Chou happy song (Single ver. with Berryz Kobo vo.) (Original karaoke)
7. Chou happy song (Single ver. with °C-ute vo.) (Original karaoke)
Lien: Mega
Limited edition Type D
1. Chou happy song (Single ver.)
2. Chou happy song
3. Because happiness (°C-ute)
4. Shiawase no tochuu (°C-ute)
5. Chou happy song (Single ver.) (Original karaoke)
6. Chou happy song (Single ver. with Berryz Kobo vo.) (Original karaoke)
7. Chou happy song (Single ver. with °C-ute vo.) (Original karaoke)
Lien: Mega