"It's a Marshmallow World"

Wikipedia entry:

"Marshmallow World" (sometimes entitled "A Marshmallow World" or "It's a Marshmallow World") is a popular Christmas song that was written in 1949 by Carl Sigman (lyrics) and Peter DeRose (music). Although it has been recorded by many artists, it was first a hit for Bing Crosby (backed by The Lee Gordon Singers and the Sonny Burke Orchestra). Crosby's version (recorded in 1950) peaked at number 24 on the pop singles chart in January of 1951. Ray Anthony also recorded a version of the song in 1950. Another popular version was recorded by Vic Damone in 1951.

One of the most popular versions of "Marshmallow World" was recorded in 1963 by Darlene Love and released as a track on Phil Spector's classic holiday album A Christmas Gift for You from Phil Spector.

Another popular version of the song was recorded by Dean Martin for his 1966 holiday album The Dean Martin Christmas Album.

Dean Martin and Frank Sinatra around '66:


Dean Martin solo on a '70s-era TV special: