Musical heavy-hitters Alanis Morissette and will.i.am are teaming with Grimes and FOX to reinvent the singing competition show … as they all serve as judges on “Alter Ego.”

Elon Musk’s GF is making a rare TV appearance for the new series, which will have aspiring singers trying to wow the judges — like most singing shows, but this one’s got a twist. They won’t perform as themselves … but as their dream avatars.

The idea is “Alter Ego” will give singers a chance to show how they’ve always wanted audiences to see them … with the help of motion capture technology.

98 Degrees singer Nick Lachey will also be on the judges’ pane, and Rocsi Diaz is set to host.

If the premise sounds a little out there, well … that’s what folks thought about “The Masked Singer” too. For that matter, the same has been said about Grimes and Elon … but they don’t seem to mind.

“Alter Ego” premieres this fall on FOX.