Not sure, since I don't know how The Maple Leaf Rag goes.

MIDI files at http://www.trachtman.org/ragtime/ -- also includes sheet music for this particular rag.

Maple Leaf Rag was Joplin's first commercial success and kicked off the ragtime era. One of my favorites (also on that site) is Magnetic Rag, his last composition, which for years was difficult to find becuase of copyright matters.