William James (August 21, 1904 - April 26, 1984), known as Count Basie, was a jazz pianist, but also an organist and composer. He started his professional career as an accompanist in a vaudeville, and pianists from Harlem had great influence on him. He played the vaudeville, before he formed his big band and contributed to the creation of a swing. He was the firs African American musician who received the Grammy Music Award.
The answer is: Piano
