Madonna has been a musical and cultural disrupter (of the best kind usually) since the early 1980's. Assuming that at some point she would just stop and be content to be an incredibly wealthy middle-aged woman is, on reflection, pretty foolish. Madge just posted this rehearsal clip with the message "Find the Middle Ground" along with the hashtags "rehearsal #process #dance #music #magic" across social media. What does it mean? I have no doubt we will learn soon enough.