Tracklist
Best experienced from track one — press play and let it unfold.
Disc 1
- 1 Happy Girl 4:00
- 2 ココロノリズム 4:07
- 3 Happy Girl (off vocal ver.) 4:00
- 4 ココロノリズム (off vocal ver.) 4:05
Disc 2
- 1 Happy Girl [music clip]
- 2 TV spot
Reference: MusicBrainz · Wikidata
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