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For more information, please see full course syllabus of Music Theory
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Lecture Comments (3)

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Post by Meysam Pirbaglou on December 20, 2013

Hi - What does diatonic mean in the context of scales or as in diatonic half step vs chromatic half step? Thank you

1 answer

Last reply by: Professor Ryan
Fri Aug 31, 2012 5:12 PM

Post by Linh La on August 4, 2012

When you count half steps, do you include the first note too? In example 6, when you counted the half steps of M3 you didn't count the first note but with all the others, you did count the first note. I've also learned in other classes that you don't include the first note because you count the steps rather than the note itself.

Major, Minor, Perfect & Numbered Intervals

  • In a one octave major scale, a major interval is either a 2nd, 3rd, 6th or 7th.  A perfect interval is a 4th, 5th or octave.
  • From the tonic note of a major scale, intervals may be numbered a 2nd, 3rd, 4th, 5th, 6th, 7th.

Major, Minor, Perfect & Numbered Intervals

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  1. Intro
    • Lesson Objectives
      • Numbering Notes of C Major Scale on Keyboard
      • Illustration of Major and Minor Intervals of C Major Scale
      • Illustration of Perfect Intervals in C Major Scale
      • Numbering Intervals of C Major Scale on the Grand Staff
        • Identifying Major and Minor Intervals of C Major Scale on Grand Staff
        • Identifying Perfect Intervals of C Major Scale on Grand Staff
        • Example 1: Finding Major Intervals in C Major Scale
          • Example 2: Finding Minor Intervals in C Major Scale
            • Example 3: Finding Perfect Intervals in the C Major Scale
              • Example 4: Writing Major Intervals of C Major Scale
                • Example 5: Writing Minor and Perfect Intervals of C Major Scale
                  • Example 6: Writing Major, Minor and Perfect Intervals Independent of the C Major Scale
                  • Example 7: Numbering Intervals
                    • Intro 0:00
                    • Lesson Objectives 0:10
                    • Numbering Notes of C Major Scale on Keyboard 0:22
                      • Scale Degrees of C Major Scale
                    • Illustration of Major and Minor Intervals of C Major Scale 1:46
                      • Major 2nd (M2)
                      • Major 3rd (M3)
                      • M is the Abbreviation for 'Major'
                      • Perfect 4th (P4)
                      • P is the Abbreviation for 'Perfect'
                      • Perfect 5th (P5)
                      • Major 6th (M6)
                      • Major 7th (M7)
                      • Perfect 8th or Perfect Octave (P8)
                      • Listening to the Major Intervals on the Keyboard
                      • Minor Intervals of the C Major Scale
                      • Half Steps are Minor Intervals
                      • Hearing the Difference Between Major and Minor Intervals
                    • Illustration of Perfect Intervals in C Major Scale 8:56
                      • Listening to the Perfect Intervals of C Major
                      • Counting Half Steps of P4
                      • Counting Half Steps of P5
                      • Counting Half Steps of P8
                    • Numbering Intervals of C Major Scale on the Grand Staff 11:01
                    • Identifying Major and Minor Intervals of C Major Scale on Grand Staff 12:04
                      • Finding Major and Minor Intervals on the Grand Staff
                      • Every Whole Step is M2, Every Half Step is m2
                    • Identifying Perfect Intervals of C Major Scale on Grand Staff 14:13
                      • Drawing and Playing Intervals as Chords
                    • Example 1: Finding Major Intervals in C Major Scale 16:32
                    • Example 2: Finding Minor Intervals in C Major Scale 17:07
                    • Example 3: Finding Perfect Intervals in the C Major Scale 17:38
                    • Example 4: Writing Major Intervals of C Major Scale 18:45
                    • Example 5: Writing Minor and Perfect Intervals of C Major Scale 20:07
                    • Example 6: Writing Major, Minor and Perfect Intervals Independent of the C Major Scale 21:26
                      • Counting Half Steps of M3
                      • Counting Half Steps of P4
                      • Counting Half Steps of P5
                      • Counting Half Steps of M6
                      • Counting Half Steps of M7
                    • Example 7: Numbering Intervals 26:49