“For most of his career, he was known as an accompanist, outdated nomenclature that cannot begin to describe his musical sensitivity to the needs of a singer. … His association with singers Elly Ameling, Jessye Norman, José van Dam, Teresa Berganza, Mady Mesplé, and above all, baritone Gérard Souzay, with whom he concertized for over three decades, literally defines the history of European art song performance in the second half of the twentieth century.” – WFMT (Chicago)