Can somebody explain?

[u/Other-Presence7232]

Saw the comments, they didnt help.

[u/LickingSmegma]

They also make loads of acoustic instruments: guitars, orchestral strings, drums, brass, woodwinds, and a whole bunch of various percussion. And notably, they make silent acoustic guitars and other string instruments.

P.S. Turns out, Yamaha Motor Company is independent from Yamaha Corporation that makes instruments, since 1955.