Each note individually or in terms of intervals and harmony? What humans tend to find most satisfying is music with simple ratios (common in all forms across the world), at least in the short term. The more complex the ratio between the notes, the more we tend to perceive as noise.
Great composers know how to push the listener, develop and keep that tension and releasing for emotional impact. Exposure to a wide range of ratios is subliminal maths. Most pop music tends not to venture into these territories (and in fact has got ever simpler since the 1950s).
To the OP, I’d say introducing more complex rhythms and harmonies would be a very good idea. Doesn’t have to be as binary as classical vs mumble though.
I grew up listening to lots of jazz and prog thanks to my dad but still love Wu Tang…
