GCSE music- different exam boards

[Sofizzy]

Does anyone know much about the different syllabi (syllabus'?) for music?

DS is doing OCR, but I mistakenly got him the Edexcel revision notes.
Will there be much difference?
Is it worth me shelling out another£15 for the correct one, or will they be almost identical?
Thanks

Try posting on the Secondary Education board, as there will be people there doing the new GCSEs in case no one knows here.

I have done that now, thanks