Lee Hyori's comeback is such a top secret that fans who attend her comeback show will have to sign a pledge of silence.

She'll be recording her comeback show on the 14th, and it'll air on the 22nd. Mnet said, "This concert will be recorded in top secret. We'll be making sure this comeback show doesn't get leaked until it airs."

To make sure that nothing gets leaked, all audience members will have to sign a pledge promising to keep their silence until the airing of the show. This is quite unusual since although fans are asked to remain quiet about these events, they usually aren't required to put it in writing. But in exchange for this top secret, she'll be gifting her fans with the highest quality stages!

Her label said, "She's practicing without rest for her comeback show. She usually wants the best, and since it's her comeback in 3 years, she's working very hard. This comeback show is almost a solo concert. She's preparing the best for her stage and performance."

Looks like everyone who's not attending the recording will have to wait patiently until the 22nd!