The triangle is an idiophone type of musical instrument in the percussion family. It is a bar of metal, usually steel but sometimes other metals like beryllium copper, bent into a triangle shape.

WASHINGTON, May 6, 2025 – The triangle is a small instrument made of a metal rod bent into a triangle shape that is open at one corner. While small, its sound is distinct, with multiple ...

In that moment, he's inspired by a woman snacking on Doritos and a nearby triangle instrument. In no time, his triangle-playing "takes the world by storm," as he says in the TODAY.com interview.