I'm working on a piece where I'd like the violins to play pizzicato notes as a background noise. However, I'd like to restrict the notes to Cm, but let chaos/noise arise through random durations and tempo changes. I.e "these are the notes, but do not stick to the tempo and beat"
Maybe leave out the notes and just write it out, e.g. "pizz. with ad lib Cm scale and tempo" ?
Edit #1: it's a Cm key signature, maybe it's enough to write "pizz. with ad lib notes and tempo"?
Edit #2: created a fast mockup as an example (This is correct in terms of ad lib tempo, but should be more random in notes though):