Add at least 3 and up to 7 notes to form a chord
Strict calculation
Add note Delete clicked note

Add 7 notes in order to form a scale
Add note Delete clicked note

Diatonic (natural) Melodic (ascending) Harmonic major Harmonic minor Byzantine (double harmonic) Neapolitan major Neapolitan minor Hungarian major Romanian major I. Ionian (major) II. Dorian III. Phrygian IV. Lydian V. Mixolydian VI. Aeolian (minor) VII. Locrian
Select a root note, a scale and a mode from above, then hit the build button to generate the scale
Build scale