Here’s a go at J S Bach’s lovely piece, Sheep May Safely Graze, as close as I can make it on melodeon. I’m playing the first couple of minutes of it only, roughly, since after then it changes key *lots* of times, and goes from being fairly difficult to downright impossible. Not many melodeon versions of this on youtube, for very good reasons.
Played on a Van der Aa Compact III melodeon in G/C, transposed down 3 semitones to being mostly in G rather the original key of Bb.