- Mieno Hitomi
- Oosawa Keiichi
- Other Information
- Arrangement: Ohkubo Tomohiro
"a-ha...!" is a song recorded by Ray.
There are currently two versions of "a-ha...!" to be found in Ray's discography.
- Found on the "ebb and flow" single as track #2, and on the Milky Ray album as track #7. This is the main version.
- a-ha...! <instrumental>
- Found on the "ebb and flow" single as track #5. This is the instrumental version.