Theory I: Week 5 Notes
Theory I: Week 5 Notes MUSI 115 - 002
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This 3 page Class Notes was uploaded by Joi Harper on Sunday October 2, 2016. The Class Notes belongs to MUSI 115 - 002 at George Mason University taught by Dr. Elaine Rendler in Fall 2016. Since its upload, it has received 10 views. For similar materials see Theory I in Music at George Mason University.
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Date Created: 10/02/16
Theory I Notes 9/28/16 Tips for Finding Intervals - The difference between a major and perfect interval - If the interval is of a second, third, sixth, or seventh that interval will follow the rules of a major interval - If the interval is of a unison, fourth, fifth, or octave that interval will follow the rules of a perfect interval - Finding a major or perfect interval (refer to above pictures) - Look at the lower note on the staff - If the higher note is in the major scale of the lower note than this a major or perfect interval - Finding other intervals - If the higher note is note is not in the major scale of the lower note than there are three other options - Minor interval - This only happens in intervals of a second, third, sixth, and seventh - When the distance between the two notes is a half step lower than that of a major interval, it becomes a minor interval - Diminished intervals - This may happen in two different scenarios - If the interval is of a unison, fourth, fifth, octave (a.k.a. Perfect interval) the distance between the two notes will be a half step smaller than that of the perfect interval - If the interval is of a second, third, sixth or seventh then this will be a half step lower than that of a minor interval - Augmented intervals - If the interval is of a unison, fourth, fifth, or octave the distance between the two notes will be a half step larger than the perfect interval - If the interval is of a second, third, sixth, or octave the distance between the two notes will be a half step larger than that of the major interval - Finding the number of an interval - To find the number of an interval count the number of lines and spaces between the two notes including both notes in the count - Example: For an interval of a fourth there should be a line and a space between the two notes as well as a line and a space that either note rests on Tips on Finding Scale Degrees - How to find degrees up from tonic to dominant - Example: What is the subdominant in A Major? - First we can count the letter names away from the tonic, so since the subdominant is the 4th note of the scale this will be 3 letter names away from the tonic A (i.e. A, B, C, D) - Next we can think of the key signature of A Major which has 3 sharps: F#, C#, and G# - If the note name that we came up with is not in the key signature as a sharp or flat, then we can leave it as is - Example 2: What is the mediant of A minor? - We will start with the same first step from before so because the mediant is the third note in the scale it will be two letter names away from the tonic A (i.e. A, B, C) - Next is a little trick. Because the mediant and submediant are the only notes that change in the natural minor scale the mediant will only be a half step lower than in the major scale - Since the third note of the major scale falls on a sharp (C#) in the minor scale this will be a half step down and is therefor C natural - How to find the submediant, subtonic and leading tone - Example: What is the leading tone in D Major? - Because the leading tone is the 7th degree of the scale it is easier to go backwards. This will be one letter name away from the tonic D (i.e. D, C) - The leading tone will always be one half step down from the tonic therefore in this case the leading tone is C# which fits right into the key of the major scale - If we were to try to find the subtonic this would be one whole step away from the tonic but still the 7th degree of the scale,thus it would be C natural - Example 2: What is the submediant in D minor? - Recall that the mediant and submediant are the only notes that change in the natural minor scale - Going backwards this will be two letter names away from the tonic D (i.e. D, C, B) - Because B is not a sharp in the D Major Scale we have to go down a half step from B to find the submediant Bb - *Pro Tip* The submediant in the major scale is actually the same as the name of the relative minor scale, so if you have these memorized you will know these really quickly
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