Metallica will play an unexpected pop-up performance at Chicago's Metro Monday night, the venue announced, and tickets were only $20.
"Metallica is playing The Metro tonight. Metallica," the Metro wrote on Facebook. "Yep, you heard that right. Stop everything you're doing, grab a $20 bill, and head immediately to the Metro box office."
According to the venue, proof of vaccination will be required and those who want to purchase wristbands had to be present at the time of the purchase.
Shortly after the venue posted, images circulating on social media indicated a long line had formed at the Metro's box office.
Within minutes of the post, the Metro tweeted that the event was sold out.
"Tonight is going to be epic!" the tweet read.
Doors are scheduled to open at 7 p.m. with the show beginning at 8:30 p.m.