As part of a campaign to raise awareness about the disappearing Sumatran tiger, Portugal. The Man will play a free show at the National Zoo next week.

The band released 400 copies of their song “Sumatran Tiger” on a record that degrades after a certain number of plays. The people who received a record were tasked with digitizing and sharing the song, which the National Zoo hopes will show the need for tiger conservation efforts.

Portugal. The Man will play on Lion/Tiger Hill next Monday at 6:30 p.m. Update: All free tickets are gone.