When sharp pins come together with balloons, what do you get? Pop. Maybe that’s what Chicago scene mainstay Kai Slater had in mind when he titled his latest solo album under the Sharp Pins name Balloon Balloon Balloon. The album, the follow-up to last year’s heralded Radio DDR, is set to arrive in November on K Records, just months after Ripped And Torn, the first Matador LP from Slater’s other band Lifeguard.