• ꒰ chromatic scale ꒱ ⋆ half-step scale
• ꒰ whole-tone scale ꒱ ⋆ comprised of 6 whole steps
  • C D E F# G# A# C
  • C# D# F G A B C#
  • (there are only two whole-tone scales)
• ꒰ major pentatonic scale ꒱ ⋆ scale degrees 1, 2, 3, 5, 6 of a major scale
  • ∃ three major pentatonic scales in a key (scale degrees 1, 4, 5)
• ꒰ minor pentatonic scale ꒱ ⋆ scale degrees 1, 3♭, 4, 5, 7♭ of a major scale
  • ∃ three minor pentatonic scales in a key (2, 3, 6,)

　　　— the three minors ˎˊ-

• ꒰ natural minor ꒱ ⋆ w h w w h w w, found in the 6th scale degree of the major, lowered 3rd, 6th, & 7th degree
• ꒰ harmonic minor ꒱ ⋆ lowered 3rd & 6th degree (7th degree stays natural)
• ꒰ melodic minor ꒱ ⋆ the 3rd is lowered in ascending, but the 3rd, 6th, & 7th is lowered in descending