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Tonality
The key of the music
Major
A happy uplifting sound (play C-C to get used to the sound)
Minor
A sad, more serious sound (play A-A, replacing the G with a G# to get used to the sound)
Tonal
Will have a sense of key/tonal centre
Atonal
Music with no sense of fixed tonality/key. May sound rather ‘random’.
Modal
Came before scales. E.g. play D-D on the white notes- this is the Dorian mode. Often used in early music, folk and jazz.