Modes of A
The seven church modes, all rooted on A. Pick a mode to hear it and see its engraved shape — Ionian / Dorian / Phrygian / Lydian / Mixolydian / Aeolian / Locrian, each on A.
A Ionian
The 'major' mode — the bright pre-tonal default.
A Dorian
Minor with a raised 6th — the wistful jazz/folk mode.
A Phrygian
Minor with a lowered 2nd — Spanish, dark, modal jazz.
A Lydian
Major with a raised 4th — the bright, floating mode.
A Mixolydian
Major with a lowered 7th — folk, blues-rock, dominant.
A Aeolian
Natural minor. The other 'default' tonality.
A Locrian
Diminished tonic. Rare; theoretical more than practical.
Modes of other tonics