Tracklist Hide Credits
| A | Happy HeartWritten-By – Rae*, Last* |
3:20 |
| B | Love Is The Only ThingWritten-By – Grant* |
4:30 |
Barcode and Other Identifiers
- Rights Society: BIEM
- Matrix / Runout (Label side A): VG - 2 - A
- Matrix / Runout (Label side B): VG - 2 - B
Other versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| 7275 | Petula Clark | Happy Heart / Love Is The Only Thing (7", Single) | Warner Bros. - Seven Arts Records | 7275 | US | 1969 |
| VG - 2 | Petula Clark | Happy Heart (7", Single) | Disques Vogue, Zafiro | VG - 2 | Spain | 1969 |
| 7N 17733 | Petula Clark | Happy Heart / Love Is The Only Thing (7", Single, Promo) | Pye Records | 7N 17733 | UK | 1969 |
| VG 87.001 | Petula Clark | Happy Heart / Love Is The Only Thing (7") | Disques Vogue | VG 87.001 | Italy | 1969 |
| AP-1612 | Petula Clark | Happy Heart (7", Single) | Astor | AP-1612 | Australia | 1969 |
