He conducted his first NBC broadcast concert on December 25 , 1937 , in NBC Studio 8-H in New York City 's Rockefeller Center .
He conducted the first broadcast concert on December 25 , 1937 , in NBC Studio 8-H in New York City 's Rockefeller Center .
Between 1995 and 2000 she spent performing and studying chamber music at the Marlboro Music Festival in Vermont , and in 1996 she served as an artist and a member of the chamber music mentoring program of The Chamber Music Society of Lincoln Center .