Lambert Orkis
Lambert Orkis is an American classical pianist. His career has been based on many differing roles: ranging from being the collaborative
pianist for Anne-Sophie Mutter for works of piano and violin chamber music since 1988 (mainly containing sonatas for violin and piano by Beethoven, Mozart, Brahms, and Schubert). In 2000, the duo was honored by a Grammy Award for their interpretation of the Beethoven violin sonatas.
For eleven years, Orkis had also collaborated with the famous cellist (and conductor) Mstislav Rostropovich on chamber music recitals. From this collaboration, Rostropovich created a permanent position for Orkis, appointing him as first piano instrumentalist member of the National Symphony Orchestra during his tenure as a chief conductor in Washington, D.C.
Read more at https://en.wikipedia.org/wiki/Lambert_Orkis