""" Create a complete reproduction of the ReBirth virtual synth. Create it as a single HTML page with javascript. Use canvas and/or react for the UI and tone.js or something similar for the audio. It should be fully working and playable. Output it as a single HTML page. See screenshot for the UI and description below for how the virtual synth system works. """

(this is followed by long spec of the RB-338 which I also generated and is too long to include here, and a screenshot).

This is essential to your text and it's significance - should be there imo.