One recording per instrument, with sound, played by hand from start to finish — and the captions name each MPE dimension as the gesture that produces it happens.
The sound is the instrument itself, captured from the app while it played — not a recording of something else standing in for it.
A finger first: a fingertip for a soft note and the flat of a finger for a hard one, a slide for the bend, a drag up for the mod wheel. Then a pen taking velocity from real pressure and leaning into a note already sounding, and two fingers where one bends on its own MPE channel while the other holds.
A pad grid, your bass tuning and a drum kit, on one surface.
Both arrangements of one surface. Velocity by how much of a pad your finger covers, the slide axis up and down a pad, pitch along a row that bends as it goes, two fingers where only one moves, and a pen adding aftertouch. Then a part written in the sequencer while it plays — and still playing underneath when the same surface becomes a bass neck.
Pitch left to right, volume up and down, vibrato from a hand that will not hold still, and one unbroken line from the bottom of the field to the top — then chord pads laid underneath, and a phone playing it hands-free from its tilt.