Spot the mistake

So far you produced shapes; now learn to READ them. The app shows a chord, pentatonic or scale on the keyboard — with one note missing, or one note wrong.

For a MISSING note: name the shape's recipe in your head and check it against the keys, degree by degree, until you find the hole.

For a WRONG note: the impostor is always one semitone off a real note. Check the notes against the recipe — the one that does not fit is your answer.

This trains the same skill you use when your hands are on the piano and something sounds off.

C major — but F has become F#. That is the wrong note.

Practise this in the trainer — it opens with this lesson the first time the concept comes up.