X

 

XG
Yamaha’s version of the Roland GS enhancement the General MIDI protocol that provides additional patch banks and editing capability.

XLR
This term describes a variety of audio connectors that use 3 or more conductors encased in an outer shield.

Xylophone
A percussion instrument set up in the form of a keyboard whose bars are made of wood. Played using mallets.

The composer reveals the innermost being of the world and expresses the deepest wisdom in a language which his own reason does not understand; like a sleepwalker, who tells things of which he has no clear knowledge when he is awake.”
  Arthur Schopenhauer