That one delay line that changes it’s length based on the note you’re playing just wasn’t doing it for you? What about having it feed another delay line that changes the it’s length in the other direction based on the note you play? And then let’s throw Max’s version of Autotune on that delay line make them both feed back.
Sound’s great! box it up!

It’ll sit there and self oscillate for at least 15 minutes without going infinite.

the patch:

the soundcloud: