Mister Snow is decidedly NOT a ballad. Carrie is having a giddy time telling Julie about this man she is in love with, and the tempo isn't down enough to be downtempo. It's a fantastic song though.
For your contrasting number, did you mean you were thinking of a song not from that same era? Maybe "Not a Day Goes By" or "Around the World" from Grey Gardens.
"Contentment, it seems, simply happens. It appears accompanied by no bravos and no tears."