I am a classically-trained, advanced pianist (my most recent piece was Fant.-Imp.) who is just starting to get into jazz and such. It's fun after 13+ yrs of forced classical (although I still love playing classical). I am also just starting to play improvs. However, my improvs are (I'm thinking) a lot different from 'accepted', or 'formal', or 'good', improvs--I simply make up a song as I go, without giving much thought to key signature, scales, song structure, etc. etc. (I do, however, come up with phrasing, expressions, dynamics, accents, themes, etc. as I go). In other words, I spend no real time thinking about the improv before I begin playing it; I simply play it.
My question isn't, "How do you improvise?" because I know there are already hundreds of books, web sites, articles, and posts on this site about that. My main question is: is it 'acceptable' to play these improvs?
It's a tough question to phrase. I enjoy playing these, I think they sound good, and my family enjoys them, but I'm not sure whether these are playable at, say, a public gathering of fellow players/friends (i.e., in the lounge of a dorm building).
One more specific question: do improvs have to follow a key signature & its related scales, or can you mix and match and come up with new ones as you go?
Any advice would be greatly appreciated.
Terry
PS, wish me luck at college (Ohio U), I move out Thursday!