Ah yes, I understand more clearly now but my answer remains the same.
From what I understand, wave players can only have one “instance” of a sound inside of it, so in order to have multiple sounds layering on top of one another, you would need multiple wave players.
Though now I’m curious as well and would like to know if there’s a better way of doing it. If there is, then I’m sure it could be found in the Lyra sample project. I’ll have a look through there tomorrow.