How did audiences tend to respond to the orchestral gestures played by the Mannheim orchestra?

Which is an Islamic architectural decoration that appears as niche-like cells in the transition area of wall to dome, with many other decorative uses as well?

a. iwan b. madrasa c. mihrab d. muqarnas

Of the following, who was a great songwriter from the 1920s to the 1940s?

a. Charles K. Harris b. Stephen Foster c. Chuck Berry d. Cole Porter