[Jtsummers]

The blogger uses Big-C Classical Big-M Music, which almost always means European classical music, pre-1900 [0]. You won't find many non-white composers in that particular group.

Capitalization matters, it creates a proper name out of something whether we agree on that name's appropriateness or not (Classical Music being so narrowly defined could be considered a misnomer, as you've pointed out there's a lot more classical music out there).

[0] I couldn't remember when I initially wrote this when the Classical Period ended, it ended earlier in the 1800s than I realized, by the common definition apparently 1820. The start was 1730 (using the earliest time people use to be generous) so "Classical Music" defines a period of less than one century of, specifically, European music.

[kazinator]

Classical music doesn't need a big C or M. Simply the lack of additional qualification in "classical music" informs us that it's the historic western practice. Other classical musics are identified as such, e.g. "Indian classical music". Or else a context is established where that qualifier is understood, and then "classical music" refers to "Indian classical music".