skybrian @skybrian@schelling.pt

If this looks like a straight line to you, you might be a CBA player.

Here are three C scales played on the treble side of my accordion, using different switches. (L, then M, then LMM.)

Here's a spectrogram of a chromatic ascending scale played on my melodica.

From: https://gothamist.com/arts-entertainment/the-best-accordion-bus-ad-youll-see-all-day