Those of you who have had the misfortune to be around me when alcohol is freely available may be familiar with my little party game of singing "House of the Rising Sun" to as many tunes as possible. (Singing very badly, I might add (parenthetically).) Old favorites include the Gilligan's Island theme, "Amazing Grace", and "I'd Like to Teach the World to Sing." Well today it occured to me that "House of the Rising Sun" also works to "God Rest Ye Merry Gentlemen" and the somewhat similar "Russians" by Sting, a/k/a "Romance" from Sergei Prokofiev's Lieutenant Kije Suite.
Naturally this works in all directions. You always wanted to sing "Amazing Grace" as a round to the Gilligan theme, didn't you? Taking suggestions now for my next impromptu a capella performance.