There's an interesting short piece in the new edition of The Wire on Louis Armstrong's reel-to-reel tape boxes, making the link between jazz & collage via 'rag time' - plantation workers 'ragging' an existing melody & improvising upon it.

Not only did Armstrong splice recordings of his own trumpet playing but decorated the boxes, too.

One of Armstrong's hobbies: "using a lot of Scotch tape".

I'd seen the collage principles behind Teo Macero's work with Miles (e.g. 'In A Silent Way'). Armstrong seems to have been in on it earlier!

(And Joseph Cornell - of all people - lived within four miles of Armstrong's house. It's a wonderful world ...).