How spontaneous or worked out are your improvisations?

How spontaneous or worked out are your improvisations?

Regina Carter Regina Carter
“…If you try to do the same thing again, you wind up sounding forced and then it’s not improvisation anymore…”
David Krakauer David Krakauer
“…each improvisation develops a certain "worked out" quality that comes from the effort to achieve an emotional arc within a particular piece…”
Tony Trischka Tony Trischka
“…I’ll often let my fingers lead my brain. In other words, just try to find the flow, and not direct the solo very much…”
David S. Ware David S. Ware
“…My solos are just about completely spontaneous, but I may have a pure conception in mind for a particular solo…”