The debut full-length collection from the Claypool Lennon Delirium—a collaboration between Les Claypool and Sean Lennon—is a fun and frightening freak-out. Monolith of Phobos took shape last fall, when the unlikely duo started bouncing raw ideas back and forth after Lennon's band The Ghost of a Saber Tooth Tiger toured with Claypool’s Primus. Monolith of Phobos covers much ground, from the proggy grooves of "Cricket and the Genie" and the bass-plucky "Mr. Wright" to the Beatles-esque “Oxycontin Girl.” This week's Georgia Theatre show is part of the quartet's lead-up to Bonnaroo and a West Coast stint later in the summer. Incidentally, Lennon isn’t the only Beatle’s son to perform in Athens this week; James McCartney plays The Foundry June 6.