INTERVAL

[Norman Barrett]

The way I learned it was the seconds, thirds, sixths and sevenths are major
when the upper note is contained in the scale of the lower note. Example C to E
is a major third but E to C is minor because the C is lowered from C# in the
scale of  E.
C to F are both in the scale of C also but F to C is also in the scale of  F.
The perfect intervals are unison, fourth, fifth and octave. There may be some
other reason but that's what I learned.

Norm Barrett

Richard Moody wrote:

> > I believe that an easier way to understand this is to say that a major
> > interval inverted becomes minor but a perfect interval inverted is still
> > perfect. What you said is accurate but harder for me to grasp.
> >
> > Norm Barrett
> >
> OH!,   Inverted.  When inverted they don't change to minor. But  they are
> also major aren't they---in addition to being perfect?    There is no minor
> from the tonic in the diatonic scale?  What defines major then?.     ---Ric