Beginners Music Theory/Music Notation

Music Notation
It is important to read this text before watching the videos that follow it. It is probably best to read and watch until you are confident you understand it. And, really, once you've gone over it at your own pace, it shouldn't be overly difficult. If you have any difficulty with a particular portion, make certain to write it down and/or say it aloud to yourself.

Modern music notation is used by musicians of many different genres throughout the world. The staff acts as a framework upon which pitches are indicated by placing round notes on the staff lines or between the lines. The pitch of the round musical notes can be modified by accidentals. (Right now, just think of an accidental as the sharp (♯), flat (♭), and natural (♮) symbols.) The duration is shown with different note values, which can be indicated by the note being just a circle (a whole note) or using stems to indicate quarter notes and other subdivisions, and additional symbols such as dots and ties which lengthen the duration of a note. Notation is read from left to right.

A staff, or stave, in written music begins with a clef, which indicates the position of one particular note on the staff. The treble and bass clefs are the most widely used clefs, and for the purposes of this course, are the only ones we will be using. Notes representing a pitch outside the scope of the five line staff can be represented using ledger lines, which provide a single note with additional lines and spaces.

Following the clef, the key signature on a staff indicates the key of the piece or song by specifying that certain notes are flat or sharp throughout the piece, unless otherwise indicated with accidentals added before certain notes. When a sharp is placed before a note, this makes that note one semitone higher. When a flat is placed before a note, this makes that note one semitone lower. Double sharps and double flats are less common, but they are used. A double sharp is placed before a note to make it two semitones higher. A double flat is placed before a note to make it two semitones lower. A natural sign placed before a note renders that note in its "natural" form, which means that any sharps or flats applying to that note from the key signature or from accidentals are cancelled.

Following the key signature is the time signature. The time signature typically consists of two numbers, with one of the most common being "4/4". The top "4" indicates that there are four beats per measure (also called bar). The bottom "4" indicates that each of those beats are quarter notes. Measures divide the piece into groups of beats, and the time signatures specify those groupings. "4/4" is used so often that it is also called "common time", and it may be indicated with a "C" rather than numbers. Other common time signatures are "3/4" (three beats per bar, with each beat being a quarter note); "2/4" (two beats per bar, with each beat being a quarter note); "6/8" (six beats per bar, with each beat being an eighth note) and "12/8" (twelve beats per bar, with each beat being an eighth note; in practice, the eighth notes are typically put into four groups of three eighth notes. "12/8" is a compound time type of time signature). Many other time signatures exist, such as "3/8", "5/8", "5/4", "7/4", "9/8", and so on.

Clefs
Main Source: Clef

Clefs define the pitch range, or tessitura, of the staff on which it is placed. A clef is usually the leftmost symbol on a staff. Additional clefs may appear in the middle of a staff to indicate a change in register for instruments with a wide range. In early music, clefs could be placed on any of several lines on a staff.

Notes and rests
Main Source: Note value Musical note and rest values are not absolutely defined, but are proportional in duration to all other note and rest values. The whole note is the reference value, and the other notes are named (in American usage) in comparison; i.e., a quarter note is a quarter of the length of a whole note.

Accidentals and key signatures
Common accidentals

Accidentals modify the pitch of the notes that follow them on the same staff position within a measure, unless cancelled by an additional accidental.

Key signatures
Key signatures define the prevailing key of the music that follows, thus avoiding the use of accidentals for many notes. If no key signature appears, the key is assumed to be C major/A minor, but can also signify a neutral key, employing individual accidentals as required for each note. The key signature examples shown here are described as they would appear on a treble staff.

Time signatures
Main Source: Time Signature

Time signatures define the meter of the music. Music is "marked off" in uniform sections called bars or measures, and time signatures establish the number of beats in each. This does not necessarily indicate which beats to emphasize, however, so a time signature that conveys information about the way the piece actually sounds is thus chosen. Time signatures tend to suggest prevailing groupings of beats or pulses.

Articulation marks
Articulations (or accents) specify how to perform individual notes within a phrase or passage. They can be fine-tuned by combining more than one such symbol over or under a note. They may also appear in conjunction with phrasing marks listed above.

Ornaments
Ornaments modify the pitch pattern of individual notes.

Octave signs
8va and 15ma are sometimes abbreviated further to 8 and 15. When they appear below the staff, the word bassa is sometimes added.