[lliamander]

"Imagining racism" is pretty much exactly what I would call the way you are judging other people's tastes in music.

Why people like what they like is complicated. Often it's connected with what the people around them listened to. There is also research suggesting that aesthetic preferences can be tied to certain personality traits (which themselves are somewhat heritable).

To suggest that one might prefer music by white people is the result of conscious animus towards non-whites is reductionist in the extreme, and provides essentially no useful insight.

And even if that preference is rooted in racism, is what someone prefers to listen to in the privacy of their own home really something that should be a collective concern? I really doubt it.

Regardless of the motive, calling someone's tastes is music "racist" is probably the least effective way to get them to try out other kinds of music.