немного электронного стимпанка )

“… developed by Thadeus Cahill in 1897…”
“… was intended to be listened to using telephone receivers.”
“… the Telharmonium used tonewheels to generate musical sounds as electrical signals by additive synthesis … ”
“… Each tonewheel of the instrument corresponded to a single note, and, to broaden its possibilities, Cahill added several extra tonewheels to add harmonics to each note. This, combined with organ-like stops and multiple keyboards (the Telharmonium was polyphonic), as well as a number of foot pedals, meant that every sound could be sculpted and reshaped…”
bonus:
“…problems began to arise when telephone broadcasts of Telharmonium music were subject to crosstalk and unsuspecting telephone users would be interrupted by strange electronic music…”