X is for Xylophone. Why? Xylophones are cool! They're not just kids toys, they're a serious instrument found many orchestras' percussion sections. It's a percussion instrument because it uses force and vibration to create sound, like a drum. Only instead of striking a flexible surface such as a stretch canvas of a drum, the musician strikes one made of metal, wood, or ceramic tiles.
Xylophones and their many variations have been around since man's earliest history. However the modern version we're familiar with has been in use since the 1860s. It was first used in an orchestra in 1874 in the performance ofCamille Saint-Saëns' "Danse Macabre".
Well enough talking about how cool they are. Just kick back and have a listen :)