Eb Phrygian scale on the guitar fretboard
The Eb Phrygian scale is made of Eb (the root), Fb (minor second), Gb (minor third), Ab (perfect fourth), Bb (perfect fifth), Cb (minor sixth) and Db (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 Phrygian mode is the third mode of the major scale, a minor scale with a lowered second. That lowered second sits a semitone above the root on the neck. It shares its notes with a major scale a major third below.