A film that offers no definite answers and requires a subjective interpretation falls into the thematic category of a focus on ideas, specifically the moral or philosophical riddle.

What are the letter names of the pitches illustrated below?

A. G E F A B. G E D F C. B G F A D. G E F C E. B G D F

What is the name for a piano technique where the left hand alternates between bass notes and middle-register chords?

a) walking bass
b) pedal tone
c) stride bass
d) sectional performance