The organ begins as a soft current of quick notes, a slower line laying itself out calmly on top.

The melody takes on its small ornaments now, quick turns folding around the long held tones.

Steadily the line climbs toward its first high point, then eases itself down into a cadence.

For a phrase the melody moves in quicker steps, its surface briefly matching the current below.

Underneath, the harmony has begun to change more often, the same flowing pattern in shifting colors.

The voices draw closer, the lower lines answering the melody in imitation, and the bass opens wider beneath them.

The melody reaches its warmest, highest stretch and holds there before letting the phrase unwind.

A new phrase opens with the top voice a shade brighter than before.

By now the pattern is clear: an unbroken stream of quick notes, and above it a melody that never hurries.

The line settles into a lower, steadier range, and the motion evens out.

The last descent: the melody comes down through its final phrase, and the current eases with it.

The final chord is simply held, then left to decay away into silence.