i like the definition from jaque fresco for the defintion of creativity.It gets down to creativity.
Paul McCartney has said he doesn't know how he writes songs.
Creativity involves putting this bit together with that bit and then those bits might go together with this other bit and at the end of it, it's either a pile of crap or it might be something.
How can anyone learn that exactly.
Sure, anyone can learn about some things and the bits etc, but putting it all together is something that can't be taught exactly unless robotic results are desired.
"creativity is taking from many different sources and combining them in new ways"
i.e if i combined trap music with reggae. or baby metal with arabian theater music.
so with that in mind the more you know the more you can do and the more combinations you can make.