What were two popular genres of song in Renaissance Florence that were, at heart, improvisatory in character?

In reverse-angle shot exchanges—common for dialogue sequences—the director takes care to fix the placement of the characters from shot to shot. Thus if character A is on the left side of the frame, where should character B appear?

A. also on the left side of frame B. on the right side of frame C. it doesn’t matter which side of the frame D. they should both be in the same shot

Japanese music is characterized by

A. the pentatonic scale. B. little or no improvisation. C. non-existent or incidental harmony. D. all of these.