Louis Armstrong - "Cornet Chop Suey"

Louis Armstrong's lead line on "Cornet Chop Suey", from the original 1926 recording by Louis Armstrongs and his Hot Five (notated in concert pitch).

Here's the original recording:

There's some dispute on the key of this original recording, to the point that some notable jazz musicians have recorded the piece in concert Eb, and others in concert F. For an exhaustive discussion, and compelling argument for F concert, check out the following page:

cornet chop suey - what is the correct key?

Here's a contemporary recording by jazz master Wynton Marsalis (in F concert - embedding unfortunately disabled):

http://www.youtube.com/watch?v=qK1UC-vCUZY