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Music Theory

Boston College (Hebert Theory Class)

Four Properties of Sound Duration, Amplitute, Frequency, Timbre
Duration how long a pitch lasts
Amplitude loud/soft
Frequency pitch, measured in hertz
Timbre colour, shape of wave, overtone series; lower notes have more overtone (sounds unclear)
Why is hte Oboe the tuning instrument of an Orchestra? Because it has the least overtone
Envelope envelope of a duration consists of ATTACK, SUSTAIN, DECAY
Piece of Music the score, basic info about 4 principle parts is incorporated here
Clef from the french meaning "key"
Rhythm beat (pulse) and tempo
Beat steadyness in which the rhythm fits
Meter grouping of beast into a pattern of strong and weak
Smallest Distance between Pitches half step
Enharmonic same sound, different name (i.e. F/E+)
Chromatic half step have to keep same letter name (i.e. F-->F+-->FX)
Diatonic Half step Adjacent letters (i.e. F--> E-)
Largo very slow
Lento Slow
Adagio Calm and at Ease
Andante Walking Speed
Endings: ino, etto A little
Ending: Issimo A lot
Allegretto a little lively
Allegro Lively
Vivace Very Lively
Presto Fast
Simple Meter Duple-->strong-->weak
Triple Meter Strong--weak--weak
Quadruple Meter Strong--weak--medium--weak
Chromatic Scale Uses sharps ascending, flats descending
Whole Tone Scale all whole steps, skips one letter (c--d--e--f--g--B)
Octatonic Scale alternates btn whole and half, repeats one letter
Major Scale no repeating letters, no skipping letters, no mixing of sharps and flats
Tonic serves as the central note, all others work around it
Supertonic 2nd note
Mediant 3rd Note
Subdominant 4th Note
Dominant 5th Note
Submediant 6th Note
Leading Tone 7th Note
Syncopation when the beat and rhythm are not in line with one another
Rubato beat is more elastic; beat sounds like it changes, used for expressive purposes
Hemiola swswsw
Major 3rd WW
Minor 3rd WH
Dorian Mode D-->D
Church Modes No key signatures, no skipping letters, diatonic, no repeating letters
Phrygian E-->E
Lydian F-->F
Mixolydian G-->G
Created by: jench820