An interesting post, Jonathan. I found the Le Ballet Mécanique very intense but that's the point I guess... Heavy on the nerves.
Ray, I initially grew familiar with Le Ballet Mécanique from an old record album which belonged to my grandfather (I may still have it somewhere), which I used to listen to. The sirens and pounding rhythms make for a heavy experience indeed. Meshes well with the unsettling leaps in Léger's film, the tides of repeating shots,the woman's face smiling mysteriously., Hedy Lamarr has gotten quite a bit of attention lately for her unusual life.