This is what happens inside a brass player’s mouth when they’re playing

Expert horn player Sarah Willis was game enough to have her mouth scanned while she pumped out some horn exercises that utilised different areas of her mouth.

inside horn players mouth

As you might expect, the things you cannot see normally are the most interesting. Just look how the mouth shape changes as the techniques do, from slurring to staccato.

Bung a horn player in an MRI scanner, and this is what you get: