Final answer:
When listening to rhythm in music, the count is based on the beat, not melody, harmony, or tempo.
Step-by-step explanation:
Rhythm is a fundamental element in music, providing a sense of time and structure. When listening to rhythm in a musical piece, the count is based on the beat.
For example, in a song with a 4/4 time signature, you would count 1, 2, 3, 4 as each beat. The rhythm of the melody and harmony fit within this beat, creating the overall rhythm of the piece.
Tempo, on the other hand, refers to the speed at which the piece is performed, and it can affect the feel of the rhythm, but it is not what the count is based on.