Getting a bit deeper, a mode is an incarnation of a scale in which a certain note is taken as the root. Thus, each scale has as many different modes as it has different tones.

In common usage, the major scale and the melodic minor scale are regarded as 'given' and the scales constructed with other notes as the root are called modes. The modes of the major scale have names (Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, and Locrian); these names were applied in the Renaissance and have no relationship to the Greek originals.

Some of the melodic minor scale's modes have names in today's theory: mode 3, the augmented major 7th; mode 4, the lydian dominant; mode 6, the half-diminished; mode 7, the altered.

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