Piano trios of Beethoven and Brahms with Mark Peskanov, Nicholas Tzavaras, and Rita Sloan Biographies Mark Peskanov A native of East Harlem in New York City, cellist Nicholas Tzavaras has toured the globe as a chamber musician, soloist, and educator for more than two decades. He has performed more than 1600 concerts worldwide, from Cartagena Columbia to the Tonhalle in Zurich to Nagasaki Japan.  Since 2000, Tzavaras has been the cellist of the internationally renowned Shanghai Quartet. Recent festival engagements…