The verdict on a passage: how hard it is, what stands in the way, and how each note would be produced.
Movement per unit time, mapped onto 1 (trivial) to 5 (at the limit). Without a tempo the passage is measured at 120 BPM, so the number stays comparable between passages; with one it rises as the tempo does.
The verdict on a passage: how hard it is, what stands in the way, and how each note would be produced.