Tracklist
| A | Happy Music | 3:26 |
| B | Happy Music | 3:26 |
Other versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| HM 1108, JM 958102 | Mastermind | Happy Music (12") | Half Moon , Half Moon | HM 1108, JM 958102 | US | 1981 |
| JMM3-548 | Mastermind | Happy Music / Uncle Slam (12") | Mastermind Records | JMM3-548 | US | Unknown |
| HM 1110 | Mastermind | Happy Music / Uncle Slam Wants You (7") | Half Moon | HM 1110 | US | 1981 |
