Musical improvisation is definitely the development of spontaneous music, usually within (or dependant on) a pre-current harmonic framework, chord development, or riffs. Improvisers use the notes with the chord, different scales that are linked to each chord, and chromatic ornaments and passing tones which can be neither chord tones https://soundtrack-190000.isblog.net/the-smart-trick-of-music-that-nobody-is-discussing-48665958