The final music
rhythm symbols are time signatures. The most common one is this:

which can also be
know as:
Notice that there are 2 numbers on top of each other. They each mean
different things. The top 4 means that there are 4 beats in a bar. The
bottom 4 means that a quarter note gets one beat.

With this
time signature, you know what the bottom 4 means. Any time there is a 4
at the bottom it means a quarter note gets one beat. The 3 on top means
that there are 3 beats in the bar.

In this
time signature, the 6 means that there are 6 beats in a bar. The 8
means that an 8th note gets one beat.
Those arel the basic music rhythm symbols. If you want to find out how
to
use them, check out the
rhythm
lessons next. Happy playing!