Welcome to the 303rd edition of Phish.Net's Mystery Jam Monday, the first* and easiest of December. The winner will receive an MP3 download code courtesy of our friends at LivePhish.com / Nugs.Net. To win, be the first person to identify the song and date of the mystery clip. Each person gets one guess to start – if no one guesses correctly, I will post a hint on Tuesday around 10 AM PT / 1 PM ET, after which each person gets one more guess before I reveal the correct answer on Wednesday. Thanks for playing!

*Reminder: For the first MJM of each month, only folks who have never won an MJM are allowed to answer before the hint. If you have never won an MJM, please answer as a blog comment below. If you have previously won an MJM, but you'd like to submit a guess before the hint, you may do so by PMing me; once the hint has been posted, everyone should answer on the blog. If that's confusing to you, check out the handy decision tree I threw together to help guide you. If you're not sure if you've won before, check in the MJM Results spreadsheet linked below.

Update: We have a winner by PM... will announce tomorrow.

Hint: Congrats once again to @wforwumbo, who is hell bent on breaking the record for the fastest to go from first win to MJM Emeritus status. This week he recognized the extra percussion and extra guitar, was able to quickly identify the 7/3/15 "Playing in the Band" from the Fare Thee Well shows put on in honor of the 50th anniversary of the Grateful Dead. Is anyone brave enough to step in front of the Wumbo Train, or will he hit Lucky #7 before NYE? Find out next week when MJM304 gets weird...