"So Small" is the first single for which Underwood shares a writing credit. Underwood co-wrote the song "I Ain't In Checotah Anymore" but it was not released as a single from her debut album Some Hearts.
Carrie Underwood's quote on So Small:
“ "So Small" is a feeling song on how people invest so much of their time and energy into things that aren't really important, and you don't really realize that until it's too late. We're all guilty of it, as I know I am, of just letting silly things get in the way. .