Question

key refers to a set of ______ that sound good together. rhythms pitches beats melodies

Explanation:

In music theory, a key is defined as a set of pitches (notes) that are related harmonically and sound good together. Rhythms are about time patterns, beats are the basic pulse, and melodies are sequences of pitches, but the core of a key is the set of pitches.

Answer:

B. pitches