Aeolian mode
The Aeolian mode is a musical mode or, in modern usage, a diatonic scale also called the natural minor scale. On the piano, using only the white keys, it is the scale that starts with A and continues to the next A only striking white keys. Its ascending interval form consists of a key note, whole step, half step, whole step, whole step, half step, whole step, whole step. That means that, in A aeolian (or A minor), you would play A, move up a whole step (two piano keys) to B, move up a half step (one piano key) to C, then up a whole step to D, a whole step to E, a half step to F, a whole step to G, and a final whole step to a high A.
The Aeolian mode is identical with the natural minor scale. Thus, it is ubiquitous in minor-key music. The following is a list of some examples that are distinguishable from ordinary minor tonality, which also uses the melodic minor scale and the harmonic minor scale as required.