I like western music.

我喜欢西部音乐。

This is Western music, isn't it?

这是西方音乐，是吧？

Do you like western music?

你喜欢西方音乐吗？

I know very little about western music.

我对西方音乐不太了解。

Rock and roll is one form of Western music.

摇滚乐是西洋音乐的一种。