The foundation of any band is musical kinship. Within the exposed confines of a trio, this rapport is amplified, leaving an indelible mark on the songs. Glance through rock history and we see this repeatedly; the groundbreaking strut of Cream, the irresistible pop of The Police, the undone roar of Nirvana. Remove any member and the band's core unravels. For Chicago-based trio, The Sweeps, this affinity is vital. Their core is firmly intact.