Poly High to Ruud Bos in 9 Steps
- Poly High was produced by Harry Nilsson
- Harry Nilsson sang Girlfriend
- Girlfriend was produced by Rick Jarrard
- Rick Jarrard produced River Deep-Mountain High
- River Deep-Mountain High was arranged by George Tipton
- George Tipton arranged Maybe
- Maybe was published by Six Continents Music
- Six Continents Music published Goeie Ouwe Plee
- Goeie Ouwe Plee by Willem Nijholt was arranged by Ruud Bos