A Minor Pentatonic scale
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The A Minor Pentatonic scale has the formula 1, b3, 4, 5, b7 with notes A, C, D, E, G
The minor pentatonic scale is a popular scale consisting of five of the seven notes of the natural minor scale, without the 2nd and 6th scale degrees. It is especially popular for improvisation, because it does not contain any semitone intervals, and therefore sounds less dissonant. This scale is at the heart of much rock and blues music.