Cowell, Sidney Robertson
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Postcard from ethnomusiologist Sidney Robertson Cowell to Frances Schillinger, asking about the Rhythmicon [the first electronic rhythm machine built by Russian inventor Louis Theremin]: "could a composer afford to buy it? I've known someone who needs it & would put it to good use, but of course he has little money. You don't say how much you want for it - It cost [Nicolas] Slonimsky $300, 25 years ago!"