1. Before We Begin... I will pass your quizzes back

2. Augmented and Diminished Intervals

3. ▪If a perfect or a major interval is made a half step LARGER (without changing the numerical name), it becomes AUGMENTED – Abbreviated with a + ▪If a perfect or minor interval is made a half step smaller (without changing the numerical name) it becomes DIMINISHED – Abbreviated with a °

4. Augmented and Diminished Intervals ▪Relationships: Smaller Larger Diminished ---------------- minor ---------------- major ----------------- augmented Diminished------------------------------perfect----------------------------- augmented There is NO SUCH THING as a diminished unison. A TRITONE is a +4 or °5

5. Augmented and Diminished Intervals Practice ▪http://www.musictheory.net/exercises/intervalhttp://www.musictheory.net/exercises/interval

6. Interval Inversions

7. Inversion of Intervals ▪Descending intervals, especially large ones, are often easier to spell and identify through the use of interval inversion ▪You invert an interval by putting the bottom pitch above the top one – For example, the interval D-A inverts to A-D

8. Inversion of Intervals ▪When you invert an interval, the new numerical name is always different from the old one. You can calculate it by subtracting the old numerical name from 9 – Unison inverts to an Octave – Seconds invert to Sevenths – Thirds invert to Sixths – Fourths invert to Fifths 2 7 3 6 4 5 5 4 6 3 7 2

9. Inversion of Intervals ▪The modifier also changes when an interval is inverted (with the exception of perfect intervals ▪OLD Modifier: m M P ° + ▪NEW Modifier: M m P + °

10. Inversion of Intervals Practice ▪M6? ▪m2? ▪+5? ▪m7? ▪°3? ▪P4? ▪°2? ▪+7?

11. Consonant and Dissonant Intervals

12. ▪Consonant = pleasing to the ear ▪Dissonant = not pleasing to the ear ▪Some of the most exciting moments in tonal music involve dissonance, which is certainly not displeasing in that context, but the dissonances resolve eventually to consonance (which gives them meaning.) ▪For now, it is suffice to say that major and minor 3rds and 6ths and perfect 5ths and octaves are CONSONANT – Major and Minor seconds and sevenths are DISSONANT – The Perfect 4 th is generally consonant UNLESS it occurs above the lowest voice – then it’s DISSONANT.

13. Consonant and Dissonant Intervals Practice ▪Consonant = pleasing to the ear ▪Dissonant = not pleasing to the ear ▪Listen to the following – is it consonant or dissonant?

14. Assignment ▪Complete the worksheet for homework