Beneath Guster's main catalog of buoyant guitar pop are tracks fueled by a sweet sense of whimsy. "Timothy Leary"—a high-strung tribute to the counterculture hero—spins fantastical images in a web of jangly guitars, while "Stay With Me Jesus" tackles the hypocrisy of religion with a quaint Beatles-esque groove. But "Red Oyster Cult," in which you're dared to sip tea "if you want to be free," is their wackiest, punkiest rocker yet.