Scales › G blues
Notes: G – B♭ – C – D♭ – D – F
The minor pentatonic plus one note, the “blue note” (the flat fifth): six notes, enough to improvise over a blues.
Steps between the notes (W = whole step, H = half step): W+H – W – H – H – W+H – W.
G major · G minor · G harmonic minor · G major pentatonic · G minor pentatonic