The Polyphonic Spree just keeps finding ways to outdo itself come Christmastime. In addition to its holidazzling tour (complete with breakdancing, zoo animals, and tap-dancing grandmas), which marks the culmination of its yearly holiday variety shows, the group has just announced its own special advent calendar. Instead of chocolates behind each door, though, The Polyphonic Spree will present a video for a song off the group’s seasonal new album, Holidaydream: Sounds Of The Holidays Volume One. The calendar, appropriately titled “13 Days Of Polyphonic Xmas,” already features videos for “A Working Elf’s Theme,” “Winter Wonderland,” and “The Christmas Song (Chestnuts Roasting On An Open Fire),” which interested parties can check out below in addition to The Polyphonic Spree’s equally spirited A.V. Undercover from earlier this year.