In the score, he instructed the soloist and orchestra to play very softly and at an unhurried tempo of thirty-six quarter notes per minute.

An instructor quizzed them about quarter notes and helped them identify low- and high-pitched sounds.

The rhythm section plays quarter notes, laying a clear foundation for the swing feel that permeates this track.

In 4/4 or 2/4 time, for example, the macrobeat is represented by quarter notes, while in 3/4 time it is represented by the dotted half.

Figure 1.39: Note lengths work just like fractions in arithmetic: two half notes or four quarter notes last the same amount of time as one whole note.