The first edition of Aaron Copland's classic What to listen for in music was first published in 1939.
I consider the book to be equivalent to a college introduction to music. It is serious, but written in a friendly style.
I make a rough distinction between Folk music (including things like traditonal folk music from wherever, Country, Rock, Blues, Rap, Jazz, Hymns, Gospel, Broadway, etc), and music which demands more attention. Right or wrong, that's how I think but I love a lot of it.
There is a large grey zone between those rough categories. Copland's Appalchian Spring, for just one example. For another, Verdi's operas were what gondoliers and street-sweepers sung at work.
The only music that truly annoys me is Rap and Praise Music.
By the way, who is Taylor Swift?