The Pixies are offering their first new song in thirteen years through the iTunes Music Store. The reunited group recorded "Bam Thwok" in Los Angeles in March, and is selling the tune for ninety-nine cents.

The two-and-a-half-minute cut was lyrically inspired by an art book that bassist Kim Deal found on the street. Deal sings lead on the song. "From the handwriting, you could tell that this book must have belonged to a little kid," Deal said. "This kid had written a short story, a paragraph really, about a party that took place in another universe, about people and monsters that were partying together. It's a song about loving everyone, showing good will to everyone."

"Bam Thwok"'s release comes amid a popular reunion tour for the influential Boston alternative rock band. Earlier this year, the Pixies announced that they would tour for the first time since 1992. The group's initial run of North American dates sold out quickly. A European tour, and a more extensive U.S. itinerary (including dates on Lollapalooza) are still scheduled for this year. Frontman Frank Black called "Bam Thwok" "a nice way for us to break the ice after twelve years."

The Pixies previous studio collaboration yielded Trompe le Monde, the group's last studio album, which was released in 1991.