To raise awareness about the quickly disappearing Sumatran tigers, the National Zoo enlisted Portugal. The Man to release a song that will itself physically disappear from the world.

With fewer than 400 of these tigers left in the wild, the Zoo gave 400 people “custom polycarbonate records” of the appropriately named song, “Sumatran Tiger,” to share on social media. From a release:

The song was lathe-cut onto 400 custom polycarbonate records designed to degrade after a certain amount of plays. With no other copies in existence, the 400 participants are tasked with digitizing and sharing the song through their social channels with the hashtag #EndangeredSong. “Breeding” the song socially will help save it from extinction, thus raising awareness about the critically endangered Sumatran tigers and need for conservation efforts.

Alt Press, for example, has a copy and is streaming it online. Here’s another.

“Growing up in Alaska, we were surrounded by wildlife and the beauty of the natural world. We learned that we can’t take these things for granted,” Portugal. The Man frontman John Gourley said in a release. “Thus the message of this project was very personal to us as a band, and we jumped at the chance to use our music to spread the urgent message of a species in danger of extinction.”

Two Sumatran tiger cubs were born at the National Zoo in August. The Zoo is seeking donations to continue its conservation efforts.