The marathon production is gearing up for the last round of competition where 3 final costumed celebs -- Prince, Firefly and Ringmaster -- will square off for the ultimate title. And, we've learned, the competition is more fierce than ever.
On top of already having a time-consuming day, we're told the mystery performers wanted extended rehearsal time with vocal coaches and choreography teams ... ahead of the final, winner-take-all round.
Of course, ya also gotta add in some production bumps along the way. We're told the crew had to add some last-minute safety precautions to the costumes.
Now ya know the 'Masked' team fully buys into the ol' "go big or go home" theory, which should be evident when the final round airs May 18.