What do we learn in this chapter?
The time signature (also known as meter) tells us how many beats are in one measure and which note gets one beat. For example, 2/4 indicates having two (2) quarter-note (4) beats in each measure, and 3/4 has three quarter-note beats per measure. The time signature will appear once to the right of the clef unless it is changed. In Chapter 1, quarter, half, and whole notes will be introduced in 2/4, 3/4, and 4/4 meter.
A quarter note equals one-fourth of a whole note, so a quarter note gets one beat in 4/4 meter. But there can never be an exact duration of a certain note. Duration is determined by the tempo that the composer or performer set up. For example, a half note could last one second or four seconds depending on the tempo.