Who was the first black composer of a symphony to be performed by a major orchestra (New York Philharmonic)?

Question

Also what is the name of the symphony??

Answer 1

William Grant Still's ''Afro-American Symphony." First performed in the 1930s.

Answer 2

George Theophilus Walker was the first composer.
He was the first black instrumentalist to appear with this orchestra.
The following year, he played the 2nd Piano Concerto of Brahms with the Boston Symphony Orchestra