Which type of theatre has the stage in the middle, like an island surrounded on all sides

The start of this composition is highly distinctive because?

a) it features tritones sounding simultaneously in two voices b) the top voice moves in long notes in chromatic descent c) the top voices moves in long notes in chromatic ascent d) the top voices moves in long notes in chromatic descent while the alto moves similarly in chromatic ascent

Which early blues singer was known as the "Empress of the Blues" and was admired for her powerful, rich tone?

a. Billie Holiday b. W. C. Handy c. Bessie Smith d. Ella Fitzgerald