kengr

As in can be sung to the same tune...

More "common" examples are being able to sing the words of the theme for Gilligan's Island to the tune of "Stairway to Heaven" and vice versa. Or either to "House of the Rising Sun". (and to get really weird, try singing the words to "O Little Town of Bethlehem" to "House of the Rising Sun")

For the Mickey Mouse bit, we need to work out some altered words for the rest of the song....