Yellowstone National Park is celebrating it's 125th year, and this summer the NPR "Prairie Home Companion" visited complete with Garrison and others singing camp songs. Kids like the most irreverent and bizarre lyrics that they can get away with. You can probably get a copy of the program from NPR. There were some witty and heartwarming songs I had never heard, as well as the classics..."Great Big Gobs of Greasy, Grimy, Gopher Guts", et.al. For the teens, taking pop or rock songs and letting them ad lib, make up their own lyrics might work. Alice