The visual-effects-heavy series gives 20 contestants the opportunity to be stars, but they’re not singing as themselves.

“It’s just a trip,” Lachey says.

It’s freaky, how real it is."

Alter Ego

Lover Boy (left) and Fern on Fox’s ‘Alter Ego.'.FOX

For instance, if the performer plays the cello, the avatar plays the cello as well.

If the performer gets emotional, the avatar will actually cry with them.

And I think that’s what’s really gonna resonate with people when they watch it.

ALTER EGO

Nick Lachey on ‘Alter Ego.'.Drew Herrmann/FOX

It’s undeniable," he says.

“It’s really bizarre, but you’re totally invested in the performances.

I’m excited for everyone to see it and have their minds blown like mine was.”

For more from our Fall TV Preview,order the October issueofEntertainment Weeklyor find it on newsstands beginning Friday.