Thanks for playing Stefan! I never got to code an actual level with a win condition, but the idea would have been around making musical chords. For example it would ask you to connect just C-E-G. So yeah, making more than 3 connections is gonna sound like palming a bunch of keys in a piano.
None of this is explained anywhere, of course, but if you want a redo, connect every other hub (C-E-G-B) and you should get a meaningful sound at least!
Thanks so much for playing!