15-second teaser

Find the chorus and make the vertical video.

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How it works

The chorus is found by looking for the loud part that repeats; click the waveform to move it.
The video is vertical 1080×1920 with the cover, animated bars and a call to action.
It records in real time: a 15-second video takes 15 seconds.

Everything happens on this device: no file is uploaded and nothing leaves the browser.