by Tania Gleaves on January 5, 2010
Music time signatures confusing you? Want to know what they are and how they work?

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When you start studying piano lessons, you will learn the basic knowledge of music which also includes music time signatures. Time signatures are composed of two numbers in the form of a fraction which tells you the number of notes and the kind of note receiving one beat in each measure. Say what?! That might have been your initial reaction upon reading this definition, believe me, I’ve been there. But don’t worry because I will break down music time signatures for you in an easier to understand manner.
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Music time signatures are commonly found at the beginning of each music sheet. These are the fraction numbers written right after the clef on the first staff. The top number lets you know how many beats there are per measure while the bottom number informs you what kind of note receives one beat. The top numbers can be any number but the bottom numbers always follow 1, 2, 4, 8, or 16. No other numbers can be represented at the bottom except for the aforementioned ones because they represent the five different notes.
If you are a bit confused by this, just imagine the bottom number in the form of a fraction with 1 as its top number. When you read the fractions, you will know right away what kind of note they stand for.
The Bottom Number With Their Corresponding Note Values:
1 – whole note
2 – half note
4 – quarter note
8 – eighth note
16 – sixteenth note
Say for example, a music sheet has 4/4 music time signature, this means that there are 4 beats in a measure and the quarter note gets a beat each time. In the staff, you will find four quarter notes or its corresponding equivalent in one measure. Some of the corresponding equivalents of four quarter notes can be two half notes, one whole note, two quarter notes and four eighths, and a few others more. Your guide for knowing the corresponding equivalents of music time signatures will be the length of duration each note has originally.

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by Tania Gleaves on August 14, 2009
Not sure why time signatures are significant? Want to know how they work?

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Fractions In Music? Oh No!
Time signatures in music indicate a song’s rhythm. Sometimes called a meter, the time signature tells musicians the number of beats in each measure of music and what kind of note counts as one beat. Written as music, they look like fractions – but fortunately the only math that you need to do upon encountering one of these things is counting!
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The top number in a time signature tells musicians the number of beats in each measure of music and the bottom number tells them the kind of note that counts as one beat. The bottom number can be pretty confusing to understand without an illustration, so we’ll use the time signature: “3/4″ as an example.
The 3/4 meter tells us that there are three beats per measure. It also tells us that the quarter note counts as one beat. A full measure would therefore contain three quarter notes or any combination of notes that when counted together, create three beats. Depending on how advanced your notation is (and how far you are in your music lessons), you’ll notice that there are some rather unique ways to shorten beats or lengthen them past their original count using ties.
A 4/4 time signature tells us that there are four beats per measure and that the quarter note counts as one beat. A full measure in this meter could contain four quarter notes, a whole note, or two half notes.
Understanding Time Signatures – Common Types
Although time signatures can get pretty complicated as your experience with piano music gets more extensive, the most common are 2/4 (popular in polkas or marches), 3/4 (popular in waltzes, minuets, and country/western ballads), and 4/4 (popular in classical and popular music). By the way, the 4/4 time signature is also denote with a “C”-like symbol:

Dupal time meters indicate two beats per measure, and triple time meters indicate three beats per measure. And the more intricate your piano music gets, the more complicated its can meter get.
For example, marches, orchestra music, and theater music often employ the 2/2 time signature. Some of Brahms’ pieces is played to a 4/2 meter while jigs, and some rock music plays to a 6/8 meter. The 12/8 supports the blues and doo-wop styles. Songs that have no time signature at all have what’s called free time.
Unusual But Creative Meters
Things can really get complicated when musicians switch meters in the middle of a song! But that only makes things interesting. Most songs maintain a regular meter throughout their entirety, but it isn’t uncommon for a small section to switch from a 4/4 meter to a 3/4 meter (and then back again).
You can find the meter of the music that you play in the beginning of the song. It should be located right after the song’s key signature or clef. Just remember that when you play, the first beat of a measure’s meter — that is, the first beat of a series of beats — is the one that’s stressed as a way to help the audience identify a steady rhythm.
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