Below is an example of two bars written in 4/4 time. The first bar contains 4 quarter-notes, each lasting for one count. The second bar contains a whole note which lasts for 4 counts, and so, occupies the entire bar.


The groups of 4 counts are separated by vertical lines known as bar-lines. A double bar-line signifies the end of a piece.

Try picking this rhythm on your guitar.