to improvise:
- from latin improvisus - unforeseen
- to invent or make something, such as a speech or a device, at the time when it is needed without already having planned it.
- to compose and perform or deliver without previous preparation. to extemporize or to improvise an acceptance speech.
- to compose, play, recite, or sing (verse, music, etc.) on the spur of the moment.
two piano improvisation:
- an improvisation tradition established by jack hurst + bruno de florence - circa 2006 - london. of note among their output, are marble arch part 6c & south kensington part 2.