Trivia
Why does a flute have a lip plate attached?

In fact, the lip plate was created so that a metal flute would have the same thickness as a wooden flute at this point. Theobald Boehm-the pioneer of the metal flute-proposed adding the lip plate in order to make the instrument easier to play.
The lip plate is a curved, oval-shaped metal plate, which is connected to the body of the flute by a component underneath it known as a riser.

The lip plate, with which the lips make contact

The lip plate, with which the lips make contact

Lip plate and riser (foreground) during assembly

Lip plate and riser (foreground) during assembly