Chapter 3 Part 2

Consonance and Dissonance Intervals that are treated as STABLE and not requiring resolution are considered CONSONANCE. Consonant intervals are P1, m3, M3, P5, m6, M6 and P8. All other intervals within the octave are considered DISSONANT.

Augmented and Diminished Intervals If a perfect or major interval is made one half step larger (without changing its interval number) it becomes AUGMENTED. If a perfect or minor interval is made one half step smaller (without changing its interval number) it becomes DIMINISHED.

Augmented and Diminished Intervals Note the standard abbreviation for diminished and augmented intervals.

Enharmonic Intervals Intervals with the same sound that are spelled differently.

Spelling Intervals Take care in spelling intervals. If a specific interval is requested, the enharmonic equivalent spelling is not correct.

The TRITONE The most common enharmonic intervals are the augmented fourth and the diminished fifth

The TRITONE The augmented 4 th and the diminished 5 th are usually called the TRITONE, since they contain three whole steps.

Classwork and Homework Homework: WORKBOOK 3A, – due Thursday, October 3.