This week, the Grateful Dead released 'Sunshine Daydream,' a three-CD/DVD set of their most requested unreleased concert. Ultimate Classic Rock and Diffuser.fm have teamed up with Rhino Records to give five lucky winners a 'Sunshine Daydream' prize pack.

Recorded on Aug. 27, 1972, 'Sunshine Daydream' was a benefit for the Springfield Creamery, the business owned by the family of Ken Kesey of the Merry Pranksters. The concert, which took place at the Olde Renaissance Fairgrounds in Veneta, Ore., includes such favorites as 'Sugaree,' 'Greatest Story Ever Told,' 'Black Throated Wind' and a 31-minute version of 'Dark Star.'

Our prize pack comprises the individually numbered limited-edition set exclusive to dead.net --  which includes not only the three CDs and the DVD, but also a bonus documentary about the show, a 40-page book and a Courtenay Pollock tie-dye slipcase, as well as a 22"x22" double-sided poster and a tote bag.

For your chance to win the prize pack, follow the instructions on the widget above. Sharing your entry across Facebook and Twitter platforms will give you more opportunities to win. The contest will expire on Oct. 21, 2013, at 11:59PM EDT. Be sure to read our official contest rules, and good luck!