The ideas behind Trane don't work for things where we haven't had good pedagogical development -- but they are the state of the art for things where we have!
And yeah, I started with music because it both has an established pedagogy that is centuries old, and the process consists mostly of repeating the same task until it soaks into your nervous system to the point you can do it without thinking.
But I am curious about the actual extent of the skills that would benefit from this. I suspect it's a matter of having experts break up the domain knowledge and the right exercises/tasks. Like, could anyone learn soccer using Trane? Have the tasks being progressively more difficult drills?
Language is a great example next to music. Both are as old as humanity, yet we still can’t reliably teach anyone a second language. But it’s obvious that it’s possible because there are people who regularly achieve this.