Welcome to the 345th edition of Phish.Net's Mystery Jam Monday, beginning a month of five consecutive single clip MJMs. 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 answers correctly in the first 24 hours, a hint will be posted. After the hint, everyone gets one more guess before Wednesday at 10 AM PT / 1 PM ET. Good luck!

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.

Hint: This was the hint, but I hadn't seen the correct answer PM'd to me until after I had posted it.

Note: Also, be sure to check out the new sheets and charts on the MJM Results spreadsheet – with thanks to @justino for the great idea. You can now view the jams we've used by song and by date, and see which songs, years, and songs-in-years have been played most in a graphical format. But remember: just because we've used a jam before doesn't mean we won't use it again!

Answer: Congrats once again to @lostboy01, the second MJMer in a row and third in the past 8 MJMs to cross the halfway mark to reaching the MJM HoF! This week, right before the hint, he figured out the ambient swells in the clip could mean only one thing: Summer Tour '98. This week's ambience comes from 7/20/98 "Makisupa Policeman," which drifts into a spacey, pulsing place before morphing into "Maze." I wonder if @lostboy01 will use his fourth code to download 7/20/98 from LivePhish.com? Stay tuned for MJM346 at 10 AM PT, where once again we'll drop a single clip puzzle for old times' sake.