Genderbeat is a musicgender that has little or no tone, pitch, or music; it is more rhythmic in nature. It is the opposite of melogender.
History
Genderbeat was coined on July 21, 2014 by no-bucks-for-this-doe on tumblr.
Flag
The flag was created on March 14, 2017 by Pride-Flags on Deviant-art.