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Tuesday, September 18, 2012. INTRODUCTION TO MUSIC THEORY. TODAY:. Music Sharing – Justin (XHS) Review : major scales Review: key signatures Writing key signatures Order of sharps & flats In–class work: Naming key signatures ET7 . POST–EXAM HUMOR!. TETRACHORDS: . TETRA = four
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Tuesday, September 18, 2012 INTRODUCTIONTO MUSIC THEORY
TODAY: • Music Sharing – Justin (XHS) • Review: major scales • Review: key signatures • Writing key signatures • Order of sharps & flats • In–class work: Naming key signatures • ET7
TETRACHORDS: • TETRA = four • Tetrachord = a series of four notes having a pattern of whole step, whole step, half step. • The four notes of a tetrachord must always be in alphabetical order. • The tones of a scale are also called SCALE DEGREES (or steps). • There are 8 degrees in every major scale. • In all major scales, half steps occur between the 3rd/4th and the 7th/8th scale degrees. • The distance between all other scale degrees are whole steps.
MAJOR SCALES: • A major scale consists of TWO tetrachords. • The two tetrachords are joined by a whole step. • Each scale begins and ends on a note of the same name, called the KEYNOTE. • A scale can begin on any note. • The KEYNOTE names the scale. (example: If a major scale begins and ends on C, the keynote is C and the scale is called a C major scale.)
MAGIC PHONE NUMBER: • WWH–WWWH
SHARP SCALES: • Build scales using sharps using the same “magic phone number”. • Starting with the C major scale, the 2ndtetrachord is always the 1sttetrachord of the following sharp scale. • This overlapping pattern continues through all major sharp scales. • Initial examples: G major and D major
FLAT SCALES: • Build scales using flats using the same “magic phone number”. • Starting with the C major scale, the 4th scale degree is always of 1st scale degree (keynote) of the following flat scale. • This pattern continues through all major sharp scales. • Initial examples: F major and Bb major.
THE KEYS, IF YOU PLEASE… • In musical notation, a key signature is a series of sharp or flat symbols placed on the staff, designating notes that are to be consistently played one half step higher or lower than the equivalent natural notes unless otherwise altered with an accidental. • Key signatures are generally written immediately after the clef at the beginning of a line of musical notation, although they can appear in other parts of a score, notably after a double bar. • Key signatures are generally used in a score to avoid the complication of having sharp or flat symbols on every instance of certain notes. • Each major and minor key has an associated key signature that sharpens or flattens the notes which are used in its scale.
THE SHARP KEYS: • Order of sharps: F C G D A E B • (Fat Cats Go Down Alleys Eating Birds.) • Naming: ½ step up from last sharp
THE FLAT KEYS: • Order of flats: B E A D G C F • (BEAD – Go Call Fred!) • Naming: 2nd–to–last flat