Hang Up Your Hangups

How many thousands of hours of practice do you think are represented in the serious groove laid down by the master/monster musicians in this video?
International Jazz Day All-Star Global Concert Osaka 2014
“Hang Up Your Hang Ups”
Herbie Hancock – piano
Roy Hargrove – trumpet
Kenny Garrett – saxophone
John Scofield – guitar
Sheila E – percussion
Terri Lyne Carrington – drums