The Numbers  ♦  12   1  ♦  7 + 5  ♦   2   ♦  221-2221  ♦  EON for Triads  ♦  EON for 7ths

7 Naturals, 5 Sharps/Flats

The 12 consist of:

  • 7 Naturals [white keys on the piano] - A - B - C - D - E - F - G, then back to A
  • 5 Sharps (#)/Flats (b) - [black keys on the piano] - A#/Bb - C#/Db - D#/Eb - F#/Gb - G#/Ab

The chromatic scale is a summary of 12 half steps, starting from any tone (our musical ruler for measurement):

chromatic scale in color

A note that is 2 half steps away from a given tone is called a whole step (w or 2; on guitar a whole step is 2 frets). Example: C to D. The whole step should not be confused with the whole note (whole note) in musical notation (rhythmic duration).