Play In the Hall of the Mountain King

Map the Minor-to-Major Route Before Starting

Section one is Am, C, Dm/F and E7. Am uses degree I, the minor wrist world and one right-hand finger. C moves to degree III, major world and one right-hand finger. Dm/F moves to degree IV, returns to minor and uses two right-hand fingers for first inversion. E7 moves to degree V, returns to major and opens four right-hand fingers.

Section two is F, G7, E7 and Am. F uses degree VI, major world and one right-hand finger. G7 uses degree VII, major world and four right-hand fingers. E7 keeps the dominant-seventh count but changes the left degree from VII to V. The last Am moves home to degree I, rotates the wrist into minor and closes the right hand to one quality finger.

Notice that G7-to-E7 leaves the right hand unchanged. Practise that pair by freezing four visible right-hand fingers while the left hand alone changes degree. In contrast, E7-to-Am changes degree, wrist world and right-hand count. Treat those two transitions differently rather than using one large whole-body movement for both.

• First half: Am · C · Dm/F · E7.
• Second half: F · G7 · E7 · Am.
• Only Dm/F uses the two-finger inversion quality.
• G7 and E7 share four right-hand fingers but use different left degrees.

Treat 132 BPM as a Preparation Challenge, Not an Advance Clock

Start without the click and form each target in a repeatable order: left degree, wrist world, right-hand count, then octave check. None of these targets uses the right thumb, so keep it folded. After the pose matches for about 350 milliseconds, the interface locks it and waits about 650 milliseconds before presenting the next card. Use that pause to visualize the next property changes.

Turn on the stored click only after a complete slow pass. The pulses do not trigger targets, grade rhythm or reproduce the famous accelerating orchestration. They expose whether you can prepare a readable pose while another timing signal is present. A late but stable target is preferable to an early pose that flickers through incorrect states.

During the manual break after E7, release tension in the four-finger right hand and prepare F with one finger. The click stops at the boundary. Choose Next section when the first F state is ready; there is no benefit to starting the second group before the hands are visible and separated.

Learn the target hold behavior → · Review hand tracking setup → · Open a custom-tempo metronome →

Separate the Dm/F–E7 and G7–E7 Problems

Dm/F to E7 is a full three-property pivot: degree IV to V, minor world to major and two right-hand fingers to four. Slow it into checkpoints. Set degree V, verify the live degree chip, rotate the wrist to major, and only then open the right hand to four. If the chord flashes through a minor seventh, the world or count changed before the degree stabilized.

G7 to E7 is a left-hand-only degree switch. Keep four right-hand fingers raised and preserve the major wrist while changing degree VII to V. If the quality label moves, the supposedly frozen right hand was not stable. This pair is a useful diagnostic because it removes two variables and makes an unintended right-hand change obvious.

E7 to Am is the final release. Close to one right-hand finger, change the left degree to I and rotate into minor. Do not add a low octave for dramatic effect; the preset expects the normal octave. Finish by holding the correct Am until the completion state appears rather than dropping the hands as soon as sound begins.

Practise inversion recognition → · Practise dominant sevenths → · Review the full control map →

Use Failure Cases to Verify the Fast Preset

Test a correct Am, then intentionally keep the wrist major; the page should not confirm the target. Restore the minor world and verify that it can lock. At Dm/F, show one right-hand finger first and confirm that root-position D minor is not accepted; change to two for the stored inversion. At E7, show three right-hand fingers and verify that the wrong seventh quality does not advance.

These negative checks demonstrate that the exercise is reading all properties rather than merely detecting hands. Afterward, restart and perform one unskipped pass. Watch for three clean world pivots in section one, a stable four-finger right hand between G7 and E7, and a controlled return to the final minor tonic.

If both hands vanish at the fastest transitions, reduce movement size and improve front lighting. If the visual labels stay correct but audio responds late, inspect browser audio latency instead of retraining the pose. Stop the camera session after practice. Frames remain local to the tab, and the site neither records nor uploads the video feed.

Fix camera and recognition problems → · Check browser audio latency → · Browse the complete lesson hub →