"The tracks are yours, 100% free gua-ran-teed," reads a post on Instagram, "but the real fun is taking part in the challenge for the chance to win some sweet swag from the Dead."
The songs, posted to dead.net, will be taken from a past Dead show, and fans can win prizes if they correctly guess the date and venue of the concert where the song came from. The daily prize is a 2025 Grateful Dead wall calendar, but there's also a grand prize, a copy of one of the limited, numbered, Friend of the Devils: April 78 box sets.
More info can be found at dead.net.