Mozart, Piano Quartet K.493, Arthur Rubinstein & members of the Guarneri quartet

[Arthur Rubinstein] "recalled that he had played trios with Heifetz and Piatigorsky but they...had expected him to play like a "timid mouse".... With the Guarneri Quartet, a young American group whose sure-fire virtuosity and tough-toned resilience tended to symbolise for the British public all that was most objectionable in American music-making, he was at liberty to play out as he wished."
(Christopher Howell MusicWeb International)
"Rubinstein plays the Quartets (and the young Guarneri members gladly follow his lead) as pure music, respectful and drained of overt excitement, with
emotions largely repressed, a thick sonority, deliberate pacing and few romantic artifacts."
(Peter Gutmann, classicalnotes.net)