It is said this structure's design is simple and serenely classical. It is a descendant of the Pantheon, the imperial mausoleum, such as Diocletian's, and the early Christian Saint Costanza. Which of the following is being described?

An important development in choral music was the introduction of

a. the falsetto voice b. descants above the melody c. the bass voice part d. a third part in the treble clef range e. humming of the cantus firmus

The concert series mentioned above was originally organized to benefit

a. Mexican youths b. African American youths c. young musicians of all races d. the art of bebop