Lately I can't stop playing this bass line. The song is profoundly sad and I used to listen to it a ton in college in the 80s. It has an unusual form and ends on a half step above tonic when the lyrics say "I'll take you home". At the death of the subject of the song, there's jingle bells. Whoa. The bass line is a beautiful melodic counterpoint to the vocal. I'm not sure who played it (Walter Becker?) but it's really amazing.