| A | LeaWritten-By – Arnold Mühren |
| B | I Gotta Know What's Going OnWritten-By – Cees Veerman |
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| IH 824 | The Cats | Lea (7", Single, Bla) | Imperial | IH 824 | Netherlands | 1968 |
| OR-2209 | The Cats | Lea (7", Single) | Odeon | OR-2209 | Japan | Unknown |
| IH 824 | The Cats | Lea (7", Single, Red) | Imperial | IH 824 | Netherlands | 1968 |
| SI. 4109 | The Cats | Lea (7", Single) | Sire | SI. 4109 | Canada | 1969 |
| 45-4109 | The Cats | Lea (7") | Sire | 45-4109 | US | 1968 |