Henry Charles Marx (1875–1947) was the American inventor of numerous musical instruments, most notably the

marxophone The Marxophone is a fretless zither played via a system of metal hammers. It features two octaves of double melody strings in the key of C major ( middle C to C''), and four sets of chord strings (C major, G major, F major, and D7). Sounding s ...

and the marxolin.

References

{{DEFAULTSORT:Marx, Henry Charles Inventors of musical instruments American inventors 1875 births 1947 deaths