I am a substitute teacher currently in a year long emergency sub slot. I also frequently sub in music classes (including twice for periods of several months, not because I have any music training but just because I like to sing.) In my classroom I include music whenever appropriate to the curriculim. For example, when we studied the New England region I gave the students a copy of the Greenland Fisheries (not a New England song but gives a good picture of whaling.)and sang it for them. Right now we're reading "Sara Plain and Tall" by Patricia McLaughlin, Sara sings "Sumer is Ecumen In" and Tomorrow I'll play them a recording of my daughter's former high school choir singing it. In older grades I've played civil war songs or sang "Sweet Betsey from Pike" because it was included in a Social Studies Text.