Trombonists’s mouth, seem from without and within

Investigator David Finlayson alerts us to this video from a camera inside a trombonist’s mouth:

It complements a video (which we looked at a while ago) of a trombonist’s mouth as seen from a camera mounted on a trombone:

NOTE: Yes, I made a bad typing error (though not quite an unseemly error, let alone a seamy error) in the headline of this post.