For drivers arrive with booming basses. They park their cars in a formation of four and open their windows. The pop songs are chaning step by step and into a bass based sound composition. The drivers get out of their cars wearing 15 inch speakers. They place them on the floor , connect them to amplifiers. The speakers are triggered with low frequencies under 20 hz, that let vibrate the membranes. The players start to play with objects in the vibrating membranes. They use their keys, styrofoam and different brass sheets.