Appears on releases
| # | Title | Length | Track artist | Release title | Country/Date | ||||
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.6 | 心の声 | 4:13 | SEAMO featuring AZU (from R) | Live Goes On |
| ||||
| 1.15 | 心の声 | 4:13 | SEAMO feat. AZU | Best Of SEAMO |
| ||||
| 3.1 | 心の声 | 4:13 | SEAMO featuring AZU | BEST (初回生産限定盤) |
| ||||
| # | Title | Length | Track artist | Release title | Country/Date | ||||
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.6 | 心の声 | 4:13 | SEAMO featuring AZU (from R) | Live Goes On |
| ||||
| 1.15 | 心の声 | 4:13 | SEAMO feat. AZU | Best Of SEAMO |
| ||||
| 3.1 | 心の声 | 4:13 | SEAMO featuring AZU | BEST (初回生産限定盤) |
| ||||