Metallica‘s youngest fan was literally born at their concert in Curitiba, Brazil over the weekend. Concertgoer Joice M. Figueiro was 39 weeks pregnant when she attended the show on Saturday (May 7th) and wound up going into labor. Her water broke before she could be transported to a medical facility. The prp.com reports that according to Figueiro, her newborn son arrived just as Metallica were closing their set with “Enter Sandman.”

Figueiro posted her story on social media, and Metallica even shared her story via their Instagram per a translated image.