<P> "I'm Gonna Sit Right Down and Write Myself a Letter" is a 1935 popular song with music by Fred E. Ahlert and lyrics by Joe Young . It has been recorded many times, and has become a standard of the Great American Songbook . It was popularized by Fats Waller, who recorded it in 1935 at the height of his fame . </P> <P> It is one of several songs from the Harlem Renaissance featured in the Broadway musical Ain't Misbehavin' . </P>

Song lyrics i gonna sit right down and write myself a letter