NLM thanks Betsy Humphreys for 44 years of service

Keyboard controls: Space bar - toggle play/pause; Right and Left Arrow - seek the video forwards and back; Up and Down Arrow - increase and decrease the volume; M key - toggle mute/unmute; F key - toggle fullscreen off and on.

Three minute video with music. No caption or transcript.

Alternatively, you can download and play the mp4 video file (18.4 MB)