Press Play — you’re told the scale, and the shape appears with notes taken out of it. Tap the missing notes back in; the faint circles on that string are the candidates. Listen — the whole scale plays, missing notes included, so your ear tells you what belongs in the gap you can see. Some questions ask for a degree instead — “tap every ♭3” — with the whole shape shown; there you hear the run and then the interval you’re hunting, the tonic against the degree asked for. Press ♪ Hear the scale any time to play it again. 3 lives, and a wrong tap ends the question. Master a scale (8 correct at 75%) and a new root is introduced; master enough of a stage and the next one opens. After you answer, the shape turns green with its degrees — the numbers are what carry to the next key.

This is Scale Maze the other way round: that one shows you a shape and asks what it is, this one names it and asks you to place it. Progress is tracked separately, because recognising a shape and being able to build it are different skills.

The Dev Console (difficulty + the challenge ladder) is owner/admin only.