Yeah— even as a non-musician who has to deal with music in a media production/directing capacity, I immediately knew what you meant. Someone who doesn't interrogate musical aesthetic deliberately might assume it encapsulated instrumentation, composition, and maybe artists or something definable like that, but it encompasses so much more than that— then-current trends in recording and production, cultural context, how it was intended to make people feel and then maybe how it really did make people feel, etc etc etc. WAY more things than you'd want to enumerate individually. Like I said, I'm not a musician, but as an art director, if I asked for a "twee ding dong ukulele whistle" song that builds energy into a "2012 bank-commercial stomp clap hey" bridge, which then turns into a weird al version of itself for comedic impact, you'd know what I was looking for enough to bring to an initial meeting.