Early abstract 3D film by animation master Norman McLaren and collaborator Evelyn Lambart.

This short was shown in between children's programs when i was very young,(late eighties) i always loved it, i came upon the description of it when searching for something else completely, its so weird i totally remember what it looked like and the music "mr. frog went a courting and he did ride mm-hmmm mm-hmmm!" i always hated the part when miss.mouses' father tells her to stay away from the frog.