Billy Joel Concerts (Somewhat OT)

Simply put, I have been trying to figure out whether or not Billy Joel in fact uses backing tracks for songs like River Of Dreams, Uptown Girl, etc in current shows. Given Journey's infamous history/the expertise of people on this board, I figured I would post about this on here.
It seems possible for BJ, especially since I have seen videos with Liberty Devitto wearing big headphones, as far back as 1994. But, while nothing like this should surprise me anymore, I am still kinda shocked to think an old-school legend like Billy Joel would engage in such practices. (It's one thing for Journey, Def Lep...even Aerosmith.)
It seems possible for BJ, especially since I have seen videos with Liberty Devitto wearing big headphones, as far back as 1994. But, while nothing like this should surprise me anymore, I am still kinda shocked to think an old-school legend like Billy Joel would engage in such practices. (It's one thing for Journey, Def Lep...even Aerosmith.)