tuba

A tuba is a big, loud instrument that people play in bands and orchestras. It's one of the biggest instruments in an orchestra.

The tuba might not be used as often as other instruments, but it adds depth to music, especially when playing low notes. You'll probably hear the tuba most often in brass bands or jazz groups, where its loud sound is really useful. But sometimes you might even find a tuba player in a classical orchestra, adding their unique voice to the overall sound of the group. It's not an instrument that people usually play on their own at home, but when used right, it can be a great addition to music.