A Major Pentatonic scale
The A Major Pentatonic scale has the formula 1, 2, 3, 5, 6 with notes A, B, C#, E, F#
The major pentatonic scale is a popular scale consisting of five of the seven notes of the major scale, without the 4th and 7th scale degrees. It is popular for improvising because it does not contain any semitone intervals, and therefore sounds less dissonant. This scale is found is most popular music, including rock, blues, country, and jazz.