Chicago-style polka music is closely related to the rock-and-roll era of the ’50s. It's sometimes referred to as the “push” style because of the intense “bellows-shaking” of the accordion.
Chicago-style polka band typically includes a trumpet or two, an (always present) accordion, a concertina, drums, a bass, and sometimes a clarinet or a fiddle.
Video below: Eddie Blazonczyk Jr And The Versatones - White Table
Video below: Lenny Gomulka & Chicago Push - Willie's Wedding Polka
Video below: Marion Lush (the "Golden Voice") and TWE - Sing'n My Heart Out, Go'n Downtown Polka
Video below: Crusade - Naked Polka
Video below: Polka Family Band - Pennsylvania Hills Polka
Video below: Dynatones - Rosalinda Polka