Inspired by the OpenSAP - 2020 Snap! course - 'Week 3 / Unit 3', showing how to reverse a sound.
The (facial) expression of amazement is encouraging, while the expression of surprise is somehow relaxing; they're both on @jens ' face (below).
Shown in the video below, in once again remixed project, the
PLOT SOUND block's definition has been edited to make it able to draw pen trails with any pen size and changing colors
It took more than a while before reversal was done. If you are going to run it below, be ready to wait as reversing a whole song takes some time.