The “Hill Arias” medley musically tells the stories of Jack & Jill (with Jack taking a bit of a tumble and breaking his crown) and the Little Engine that Could that finally made it to the top of the hill.
These may not really be, technically speaking, Arias, but still I think they are … well, never mind. If you get it, you get it, and if you don’t, you probably won’t.
The "Hill Arias"