"Merrily We Roll Along" is a song written by Charlie Tobias, Murray Mencher, and Eddie Cantor in 1935, and used in the Merrie Melodies cartoon Billboard Frolics that same year.
The first two lines of Cantor's recording are: In the 1970s, it was adopted by WGN as the theme music for The Ray Rayner Show, which featured Warner Bros. cartoons.
From 1994–2003, it was used by Warner Bros. Television as part of their logo at the end of shows, in reference to the studio's production of Looney Tunes and Merrie Melodies shorts.
The song shares a title with the 1934 play Merrily We Roll Along by George S. Kaufman and Moss Hart, but is unrelated to it.
The old folk song "Goodnight, Ladies" contains the line "Merrily we roll along", which is often used as a child's nursery rhyme.