Madonna is currently directing a film called W.E., which has some scenes in Central Park. Unfortunately, some of the filming took place September 17, the same day as a Ween concert, and the director found their soundcheck distracting. According to Hidden Track via Gene Ween’s Facebook, Madonna herself ran up to the stage and demanded to speak to the band. They didn’t come out.
The pop icon bought a few minutes during her conversation with [Ween's manager] as soundcheck was delayed until approximately 5:30.