Well, aside from stop listening to Country music, here's what you can do:
Select 'Browse' in iTunes (I think it's a little icon at the top-right. You now 2 or three selection lists at the top ("Genre", "Artist" and "Album" - you have to specifically turn on 'Genre' in the preferences). You can select any combination of these lists, and any tracks that qualify will be listed in the song list area. You can just play from this list, or use it to create a new playlist (command-A, File->New Playlist from Selection)