___ - music educator who built a band based upon precision and discipline, who used a varied instrumentation (temple blocks, timpani, celeste, etc.), emphasis on melodies with unpredictable phrasing, and colorful solo devices (timbral contrasts, dynamic contrasts, etc.) to create a style that moved in a direction different from that of Henderson's.
a. John Philip Sousa
b. Gil Evans
c. Duke Ellington
d. Charles Ives