Mozart Piano Quartets s 1 and 2 (with members of the Guarneri Quartet, 1971). He was survived by his wife Constanze and two sons. Keep up your strength and push hard as you lobby the Bills so needed. Even so, its a relaxed and grand performance, although its shaped largely by Mehta and the orchestra, with Rubinstein reduced largely to the role of a dutiful accompanist, rarely taking the initiative and achieving little interplay. With the subtle diffidence he brought to the delicate filigree of the last two Impromptus.