Watch on Soap2day. Martha Argerich, is considered as one of the greatest pianists of our time. Sophie Pacini, on the other hand, has been praised by critics and loved by her fans for her 'effectful, but never affected piano playing'. An intimate and lightning personal and artistic friendship connects Sophie Pacini with Martha Argerich, who has now become her personal musical mentor. The two female pianists play at the Konzerthaus Wien with festive splendor on four hands with works by Mozart and Liszt.