I am an elementary music teacher and I teach traditional music almost exclusively. I refuse to "Disneyfy" my curriculum, while there are such riches abounding. Having said that, I must confess that I haven't taught "Erie Canal" or "When Johnny Comes Marching Home" for some years. I almost never teach the same lesson two years in a row, so next year I'm going to get out the wonderful "song map" of the US that Art Thieme sent me some time ago, and take the students on a musical tour of the country!
I also spend a lot of time teaching music of other cultures, so it does cut into the time I have. Especially since I only have them for 30 minutes at a time!
I realize that I'm priviledged to have the job I do. The way our governor is cutting funds in NH, we may go the way of California in the next few years!