Which composition employs rondellus technique, rota, and a pes?

The Sydney Opera House owes a stylistic debt to the architecture of ____

a. Solomon Guggenheim b. Frank Lloyd Wright c. Joern Utzon d. Charles Garnier

Unlike folk singers, ________ sing about their own feelings, lives, and relationships in a very personal way.

Fill in the blank(s) with the appropriate word(s).