I always improvise (or, do we mean 'noodle?') when I play. That's really all I like to do, it seems... in fact, I am not very 'tuney.' I find it difficult to play many tunes, because I really only learn (other people's) tunes at places like church services or 'sings' or... sessions if I went to any, but I don't. (Doing 3 songs in church tomorrow, though.)
Then, I guess there's the question of whether or not something is being
'improvised' or if it's
'experimental' music. In fact, if someone can come up with good definitions and comparisions, that would be interesting!
Me, I think of 'improvising' meaning that there's an existing, known tune, but I don't have written music so I arpeggiate chords within the chord progression or whatever.
I think that 'experimental' music describes what I do when I create my own songs, these days. The composition is usually partly a 'normal tune' and partly an oddly-patterned sequence of related chords or theoretical something-or-other. Usually the song has at least a few vocal lines.
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On a related note... it's funny, I used to say that I hated jazz (and, true, there's some forms of jazz I just don't go for), but, over time I've really started to like a lot of what I hear at night on my favorite radio stations (mostly WGBH Boston).
Well, over this past winter, we had some problems with a lot of noise in the walls from some critter that had gotten into the walls -- something(s) even started to gnaw right through the soft wood directly into the inside. It scared me almost to death, since it reminded me a lot of the same noise that I heard one night when someone broke into a house I was sharing with some people, years ago -- that awful, crazy, splintering wood sound (kinda like, 'Wendy...I'm home!!!'). Anyway, I started playing radios all night long, to indicate that the place was in fact occupied -- to have some noise going. Jazz. Jazz all night. Eventually, I really started to like jazz!
Finally, I got a photo of something that's using the hole previously dug by the 'thing' that was getting into the walls. I'm not sure the original owner was a chipmunk, as in this photo -- but, though the noises seem to be gone, now we do see these cute chipmunks outside and they run into the holes dug near the house. I still play a lot of jazz on the radio, and they don't seem to mind:
Click to view attachment... And, I keep a recorder handy, too, to record music or whatever. The Pogo Ripflash is great, because it's possible to operate it without seeing it -- the buttons are big, etc.. Most other modern digital recorders have very picky little buttons that you must look at to get right.