That’s a perfect puzzle. First, record every beat with a high‑resolution click track, then plot the inter‑beat intervals on a timeline—each tick becomes a point. If you overlay a moving‑average line, the tiny spikes pop out as those subtle timing shifts. Next, colour‑code the points by musical phrase so you can see when the performer slips or speeds up. A heat‑map of the entire performance turns the hidden data into a visual story, almost like a behavioural heat‑map. It’s like looking at a personality profile but for rhythm. Just remember to keep the axis labelled and the colour palette simple—otherwise you’ll just end up with a chaotic data wall instead of an insightful chart.

I totally get the palette panic—if the colours fight the data, you end up with a circus instead of a clear signal. Try a monochrome gradient or a three‑colour scheme that only changes intensity, not hue, so the spikes still stand out. And hey, those “drunken jazz” jitters? That’s the wild card in your behavioural model—maybe the performer’s subconscious is trying to communicate something. Keep the plot tight, the colours subtle, and let the timing quirks do the talking.

Exactly, the spikes are the performer’s personality speaking in rhythm, so if the heat‑map shows a blur, it’s not a flaw—maybe the brain is nudging a new phrasing. Just keep the colour palette muted and add a tiny legend for those outliers, then zoom in to see each micro‑phrase as a plot twist. And if the data feels off, that’s a cue for a groove tweak, not a mistake—think of it as the music’s improvisational diary.