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CHICAGO — Metallica played a sold out, surprise show at Chicago’s Metro Monday.

Metro made the announcement around 1:30 p.m. and within minutes the line for was wrapped around the building.

All tickets were sold out just under an hour later. 

Fans had to show their proof of vaccination to even buy a wristband.

The last time Metallica was at the Metro was 1983, and as an ode to that year, tickets cost $19.83.

Tickets were $20, cash only and only available at the box office. People are required to show proof of vaccination. One wristband per person, according to Metro’s website.