What was the entrance porch of Old Saint Peter's in Rome called?

Yûgen is

A. an aesthetic term meaning grace. B. the concept that theatre should present an idealized society. C. a taste or flavor that creates a mood or feeling. D. a bit of comic stage business.

What genre of jazz would you associate this piece?

a. Cool jazz b. Bebop c. Avant-garde or free jazz d. Neo-classical