Kraftwerk were more than a bit cool, weren’t they?
And also partially responsible for a memorable scene from the unsettling Fassbinder film, Chinese Roulette:

I stayed up late when I was young to watch this – It’s a wild and uncontrolled performance of a thundering, propulsive song. It’s like they’re straining to contain the noises inside them as the song roars along.

Gunta Stölzl, Collage made for the portfolio ’9 Years Bauhaus’, 1928

This collage really leapt out at me when I went to The Barbican’s Bauhaus: Art as Life exhibition. It feels full of joy and invention.