They Like to Sing (tales from the past)

My first grade students like to break out in song. Today's tune was a tearful ballad compared to the catchy and cheerful song they sang yesterday. Some students tried an operatic voice while others whispered quietly. Usually after singing the impromptu tune three times in a row, they break off into their own gossipy conversations. I'm assuming all of what they're singing and saying because, actually, I haven't the faintest idea what they're chattering on about.