What term describes the use of music in early films by adding it to moments when people were not speaking, such as

Why does Renaissance music sound fuller than medieval music?

A. The bass register is used for the first time. B. Composers considered the harmonic effect of chords rather than superimposing one melody above another. C. The typical choral piece has four, five, or six voice parts of nearly equal melodic interest. D. All answers are correct.

Stage right and stage left mean the right and left side, respectively, from perspective of _______

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