Guitar theory lessons

Time

Divide the beat without moving it

Long and short notes are fractions of the same span of time.

Take the guided lesson
Reference

One bar, different ways to fill it

FigureDuration in 4/4Fit in one bar
Whole note4 beats1
Half note2 beats2
Quarter note1 beat4
Eighth noteHalf a beat8
Sixteenth noteA quarter of a beat16

These beat counts assume a quarter-note pulse. The fraction names compare each figure with a whole note.

The shape carries the duration

The hollow or filled head, stem, and flags identify the value. These symbols do not tell you which guitar string to use.

Whole noteHalf noteQuarter noteEighth noteSixteenth note

Listen to duration, not only attacks

The line shows how long a note continues. A held sound does not need another attack on every click.

Two half notes4/4 · Quarter-note pulse
1Attack
&Hold
2Hold
&Hold
3Attack
&Hold
4Hold
&Hold
Four quarter notes4/4 · Quarter-note pulse
1Attack
&Hold
2Attack
&Hold
3Attack
&Hold
4Attack
&Hold

● attack · — hold · · silence. The quiet high click is the pulse.

Put these in order

Arrange these from longest to shortest

  1. 1empty
  2. 2empty
  3. 3empty
  4. 4empty
  5. 5empty
Check yourself

A half note plus two quarter notes fills how much of 4/4?

What to keep

Takeaways

  • A figure tells duration; an attack begins that duration.
  • Ratios stay the same when tempo changes.