Duke Ellington's "Black and Tan Fantasy"

I'm currently listening to the first disc of a two-CD set of Duke Ellington.  The very end of "Black and Tan Fantasy" sounded familiar, and I just verified the source of the quotation.  It's the beginning of the third movement ("Marche Funebre - Lento") of Chopin's Piano Sonata No. 2, Op. 35.