Dave King is the Twin Cities’ most musical drummer and at the center of the Twin Cities’ avant garde jazz scene. This weekend the Walker Art Center is giving you double doses of King — nearly every band or project he performs with will be on stage. 3-Minute Egg is taking you somewhere the Walker won’t — inside King’s car, along with his rehearsal studio, as his newest group (featuring former Husker Du bassist Greg Norton) prepares a song for the concert.