Bb Dorian scale on the guitar fretboard

The Bb Dorian scale is made of Bb (the root), C (major second), Db (minor third), Eb (perfect fourth), F (perfect fifth), G (major sixth) and Ab (minor seventh). The fretboard shows every one of them across the neck in standard tuning (E A D G B E), and plays them back so you can hear the scale.

The Dorian mode is a minor scale with a raised sixth, the second mode of the major scale. It uses the same notes as a major scale a whole step below, so the neck shows one shape under two names. It sits between the natural minor and the major scale in colour.