According to Our New Arrival

"" is a song sung by Two-Bread Tom and then Marceline in "Everything Stays." The song is not an original written by Tom, but is part of the theme song from the TV series . Mr. Belvedere is an American sitcom television series that ran for 6 seasons from 1985 to 1990.

Trivia

 * This is the fourth licensed song to appear in the show. The first song being "Where Everybody Knows Your Name," the second being "Slow Boat to China," and the third being "Mama Said."
 * Tom's knowledge of the song proves that the Mushroom War could not have began anytime before 1984-1985, when the song was recorded and heard for the first time.

About the song

 * The Mr. Belvedere theme song was performed by Leon Redbone and written by Gary Portnoy, and co-written with Judy Hart Angelo, who also wrote the Cheers theme song.