The sound of a plucked guitar string probably ought to be expressed with chiplets. https://en.wikipedia.org/wiki/Chirplet_transform https://en.wikipedia.org/wik

The sound of a plucked guitar string probably ought to be expressed with chiplets. https://en.wikipedia.org/wiki/Chirplet_transform https://en.wikipedia.org/wiki/Chirplet_transform You could also use a physics-based model. That has lots of math, including calculus. https://en.wikipedia.org/wiki/String_vibration https://en.wikipedia.org/wiki/String_vibration I'm not sure what it takes to appreciate good company, but graph theory and statistics seem likely. You'd have to model the social network somehow. Facebook and Twitter would know more.