How to make a catchy tune: Write it in Canon in D's chord progression.
Download MIDI: https://drive.google.com/file/d/1kUfVxI5poYQZKyvwYKrH3zaXwzp1Gp2v/view?usp=sharing

Pinkie Pie art by LiaAqila: https://twitter.com/LiaAqila01/status/1708121134057836626