Acustica, Side 3 by Mauricio Kagel

“Humming-loudspeaker (the German term "Summenlautsprecher" derives both from "Summe" = sum and from "summen" = to hum), and more details at

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We can't find this song online. Make it your jam if you know a good link! :)

This jam is special! The first and only time it’s been posted was by hearingthings in Aug 2015.