Thaddaeus Ropac talks contemporary art: The market, the moguls and the monumental masterpieces 

ENCORE! : In today's show we're joined in the studio by gallery-owner Thaddaeus Ropac. The Austrian contemporary art expert represents more than 60 different artists and has galleries in Salzburg, Paris and Pantin. He talks to us about a career spanning three decades, describing how he's seen the art market evolve and expand.