An interval of eight semitones between two different notes. For example, C to Ab is a minor sixth interval. Mode A type of scale built by starting another scale from a note other than its root. Octave ...

Music Theory 101 is a free and interactive resource that takes the subject back to first principles, so you get explainers on notes, scales, intervals, chords, chord progressions, rhythm and musical ...

Those preferences seem to stem from the so-called harmonicity of consonant intervals. Notes contain many overtones — frequencies that are whole-number multiples of the basic frequency in the note.

For consonant intervals the overtones of the two notes tend to coincide as whole-number multiples, whereas for dissonant intervals this is no longer the case: they look more like the irregular ...