Yeah, here's THE JOLLY BOYS ORKESTER doing the surf in STENBROENS "HELTE" from 1965. STENBROENS "HELTE" is a psychotronic juvenile delinquents masterpiece no less! It was directed by Poul Nyrup and altho only his third film unfortunately it also became his last. Poul Nyrup is our psychotronic pride of Denmark. Needless to say most of Denmark still refuses to even recognise these films' existence and none of them are on official DVD (but ask and ye shall find).
Thanks to Kenno for uploading this!
If you wanna know more about Nyrup and his films here's an old article I wrote 6-7 yrs ago. Oh, I hope you read Danish. :/