There's definite order what young Gavriil does here. He starts with some not-quite-random plinking.
He (obviously) hears something and sets out to explore it at 0:37, where he plays a repeated note in the left hand, adds a note with the right (0:43), and then opens it up, adding more notes with both hands (0:48).
Pause.
Repeat the sequence (0:56), starting with a higher note.
Repeat (1:24), quickly.
Repeat (1:33), moving higher, with some variations thrown in (1:36).
Repeat (1:47), moving higher (notice how he shifts position on the bench, 1:49) – follow his eyes.
Repeat (2:03), notice how he lays into that first note (even dropping his right arm to the side), adding the right, filling it out, increasing the volume. The repetition slows, becomes more insistent...
Pause, both hands raised (2:37),
Repeat (2:38), really laying it on with the left, adding the right (2:43)
He's thinking (2:51), and now begins developing some new material.
That's the really significant thing, he introduces some new material after having worked through one basic idea seven times (by my count). I leave it as an exercise to the reader to attend to how he deals with this new material, which seems a bit more concerned with what the two hands are doing at the same time.
After a bit be pauses and thinks a bit at 3:35, and is figuring out whether or not he's done (3:45). Ah, not quite. Last note at about 4:00. But he keeps working his arms and hands without sounding notes, moving them back from the keyboard at 4:10, down to his lap (4:15), then back up. 4:24, hearing his mother (I assume), he's done, and moves away.
Is this how young Johan Sebastian and young Wolfgang got started?
