Common Music Time Signatures
Ex:In music, a time signature tells you the meter of the piece you’re playing. Composers decide the number of beats per measure early on and convey this information with a time signature. The two numbers in the time signature tell you how many beats are in each measure of music. A piece with a time signature of 4/4 has four quarter note beats; each measure with a 3/4 meter has three quarter note beats; and each measure of 2/4 time has two quarter note beats.
A time signature of 4/4 meter does not mean that each measure has only four quarter notes. It means each measure has only four beats. These beats may contain half notes, quarter notes, eighth notes, rests, whatever the composer wants, but all note and rest values must combine to equal no more or less than the top number (or numerator) of the time signature.