A couple of animations by Norman McLaren using the scratching & painting directly onto film stock technique, in the same fashion as used by Len Lye, in fact both worked for the GPO Film Unit around the same time. I'm not sure who 'influenced' who!
Hen Hop, 1942
And a later more conventional animation in collaboration with Réne Jodoin in the film - Spheres
FULL SCREEN RECOMMENDED!