Having established that the perfect 1st interval of the A major scale is note A, this step will explore the other 1st intervals next this note.Ī perfect interval usually has 2 other intervals grouped around it - one higher and one lower: This step identifies the note positions of the A 1st intervals on a piano keyboard. So we will definitely see extra sharp or flat spelling symbols there. This rest of this page will focus on the relationship between the tonic note - A, and the intervals surrounding the 1st major scale note - A, whose interval quality is perfect. the uses the 1st, 3rd and 5th notes as they are, ie. Or a 1 3 5 7 chord adds the extra 7th note, ie. Using just the notes we have in the major scale above, a chord spelling of 1 3 5 uses the 1st, 3rd and 5th notes as they are, ie. And since the above table shows the intervals of the major scale, no sharp / flat adjustments are needed.

The spelling of the interval qualities in the above table will always be shown without any sharp(#) or flat(b) symbols, since these extra symbols represent the difference of the note from the major scale. You may have seen a chord expressed as 1 b3 5, for example. In music theory, note intervals can also be expressed using using a spelling or formula, which mean the same thing. are more consonant / less disonant, when played together ( harmonic interval) with, or alongside( melodic interval) the tonic note. The difference between the perfect and major intervals is that perfect interval notes sound more perfect / pleasing to the ear than major intervals - ie. This rule is fixed all major scales in all keys, so you will never see a perfect 3rd or a major 4th interval. So the 1st, 4th, 5th and 8th are always perfect, and the rest are always major.

The interval quality for each note in this major scale is always perfect or major. The table and piano diagram below show the 8 notes (7 scale major notes + octave note) in the A major scale together with the interval quality for each. This step identifies the interval quality and formula / spelling for each note in the major scale, then identifies the first note of the major scale, and decides whether the interval quality is either perfect or major. The augmented Unison interval below A# is A A 1st inverted intervals Shortġst intervals below note A Intervals below Short This table inverts the above intervals, so that each link in the last column leads to note A. These intervals are shown below on the treble clef followed by the bass clef. Middle C (midi note 60) is shown with an orange line under the 2nd note on the piano diagram. 1st intervals above note A A perf1-aug1 intervals Short This step shows the A first intervals on the piano, treble clef and bass clef.

A1 midi note number