P5.js- Fill ellipse with image

Hi there folks!
Been working on this project: bouncysound.glitch.me
See the code: https://glitch.com/edit/#!/bouncysound
I want to fill the ellipse generated with an image. I heard I may need to use the mask function, but I have no idea how. I’ll keep on looking for a solution, but the ellipse moves, so most solutions online wouldn’t work if I am correct. Would appreciate if anyone can guide me on this :slight_smile: