We make a note last a certain length of time (a certain number of
beats) by adding "decorations" to the note:
Making the note-head white (hollow) or black (filled in)
Adding a stem
Adding flag(s) or beam(s)
(Disclaimer: Everything I say below is actually only true if the music
is written in "4/4 time". Most
pop music is in 4/4 time, so that keeps this lesson simpler.)
So, here are the different note lengths:
The Whole Note
The whole note lasts for a "whole measure" (in 4/4 time), which means
it lasts for 4 beats. The whole note is "white" (hollow) with
no stem. It looks like this:
The Half Note
The half note lasts half as long as a whole note, so it gets
2 beats. The half note is white, like the whole note, but
with a stem. Here are a couple of half notes:
The Quarter Note
The quarter note gets 1 beat. The quarter note looks like the
half note except it's black. Here are a couple of quarter notes:
The Eighth Note
The eighth note gets half a beat. A single eighth note
looks like a quarter note, but with a flag. Here are a couple of single
eighth notes:
However, when we have multiple eighth notes in a row, we can use a
beam instead of flags. Here are two eighth notes drawn using a beam:
Counting Eighth Notes
It's important to count the beats when you're playing notes, so now
that we have half-beat notes, you may ask: how do we count
half-beats? The answer is: we say the word "and" between the beat
numbers, like this:
|1and2and3and4and|1and2and ...
When we show the counts along with the music, we write "+" instead of
"and", although we still say "and". Here's an example:
The Sixteenth Note
The sixteenth note gets 1/4 of a beat. We draw sixteenth notes
with 2 flags or 2 beams, like this:
To count sixteenth notes, we have to count quarter-beats. We do
this by inserting the letters e (pronounced "ee") and a
(pronounced "uh" or "ah") between the beats and the "ands", like this:
|1 e + a
2 e + a 3 e + a
4 e + a |1 e + a ...
Practicing
To get to where you can understand a rhythm by just looking at it, you need to
practice reading and playing (or singing) lots of written music. We can't give
you that practice in this theory course; you have to go do that yourself! Most
people need help from a music teacher, at least occasionally, to make sure
they're "on the right track".
Next: There's more you need to know to read rhythms; learn how we
write "odd-length" (e.g. 2½- or 3-beat) notes in
Lesson 39: Tied & Dotted Notes.