Rhythm is something that can be improvised or changed easily if you know the piano well. Think about
singing: You can sing by holding some notes longer and cutting other notes shorter. You do not need to be told how
to do it.
If you want to learn a song that you do not know, written music can be used to help you understand the rhythm.
Also, if you want to play in an ensemble that is playing from sheet music, you will stay in time with them better
if you play from written music as well. The first thing you need to learn about rhythm is the time signatures. The
time signature is written to the right of the treble and bass clefs on the first line of a piece of music. If the
time signature changes within the piece, a different set of numbers is written at the point where the change is
about to take place.
A time signature is two numbers, one over the other. The top number tells you how many beats there are to a
measure. A measure is a unit of the musical piece that is marked off by a vertical line through the staff. There
should be identical vertical lines through the treble and bass staffs at various points. Try to find them on your
music.
The bottom number tells you what kind of note makes one beat. Therefore, a 3/4 time signature would mean that
there are three notes to a measure and these notes are quarter notes. As you become more familiar with piano
rhythms, you will see that the time signatures are more of a suggestion than an order to stamp your foot and play a
quarter note with each beat. However, to begin it is easiest if you do if you tap your foot and play one beat per
every note of the type listed in the bottom of the time signature.
Notes have different values based upon how they are written. A whole note is the basis of the rhythm. A measure
can consist of a whole note and nothing more. In 4/4 time, a whole note is worth 4 beats. This makes sense when you
consider that a quarter note is worth 1 beat. 4 quarter notes would make one measure. Four fourths equals a
whole.
Music rhythm is very similar to math. In fact, it has been shown in studies that babies who are exposed to
hearing music with complex rhythms are better at complex math later in life. To begin, though, you only need to
know a few simple equations. If a whole note is worth 4 quarter notes, it can be worth two half notes as well. A
measure can also be divided up into eighth notes. A whole note, two half notes, or four
quarter notes are worth eight eighth notes. When you add a dot to a note, it adds half again to that note. So, a
dotted half note would be worth three beats, or the duration of three quarter notes.
The whole note is a simple circle with an open center. The half note is the same, but it has a line coming up
from the side of it, making it look different. The quarter note is like the half note, except that the center of
the circle is filled in. An eighth note has a small flag on the line coming up from the note. It can look like this
if it is alone: ♪. Or it can look like this if it is with another eighth note: ♫.