how on earth Hendrix moved, within the space of three years
natural talent and interest... I remember reading about how some famous blues guitarist (forget which one) grew up so poor that his first instrument was a discarded tobacco can - by practice he was able to get different sounds (basically chord progressions while he sang melody) from it.
also, look at the gypsy kids playing violin on the street, as small children they just produce random notes (or just random squawking), but after a few years their playing is surprisingly good without a single music lesson just constant practice and mimicry and by adults many become brilliant musicians... without a single formal lesson or without knowing how to read music