| 1969 | Jij hebt mijn droom vermoord / Comb and Paper | Sommer Set | 1 |
| 1969 | Met een ruimtepakkie aan! / Party Time | Sommer Set | 1 |
| 1970 | Let's Try Again / Julia | Sommer Set | 1 |
| 1974 | Tomorrow / Sunshine and Rainbows | Sommerset | 1 |
| 1974 | We Remember Jim / Four Walls | Sommerset | 1 |
| 1975 | Almost Persuaded / Nashville Tennessee | Sommerset | 1 |
| 1975 | Another Lonely Night / Iron and Stone | Sommerset | 1 |
| 1975 | Ruby (Don't take You Love to Town) / I Will | Sommerset | 1 |
| 1976 | Another Lonely Night / When Do You Love Me | Sommerset | 1 |
| 1976 | There Goes My Everything / When Do You Love Me | Sommerset | 1 |
| 1979 | Wedding Song / Everytime I Sing a Love Song | Sommerset | 1 |
| 1980 | Mi amor / When Blue Eyes Cry | Sommerset | 2 |
| 1981 | Pretty Angelina / Be My Friend | Sommerset | 1 |
| 1981 | Song for You / That's How We Were | Sommerset | 1 |
| 1981 | The French Song / Summer Love | Sommerset | 1 |
| 1981 | Viva la musica / Bang Bang Cupid | Sommerset | 1 |
