How Does A Tambourine Finger Roll Work In Slow Motion?

The video tutorial explains the finger roll technique for playing the tambourine, a percussion instrument. It covers the tambourine's components, the need for beeswax to create friction, and the mechanics of the finger roll. The tutorial also provides a slowed-down view to illustrate how the finger roll produces sound. The video concludes with a call to support the creator through Patreon.

What happens to the finger during the finger roll that contributes to the sound produced?

How can you identify a finger roll being played by a percussionist in an orchestra?