Leonard Bernstein’s performance of George Gershwin’s piece, which premiered on February 12, 1924, is in two sections. The continuation is here. Here is Gerswhin’s own version.
Gershwin’s version of I’ve Got Rhythm – here is a snippet — is rowdier than I thought it would be. For good measure, here is Charlie Parker’s take on the piece.
George and lyricist brother Ira Gerswhin have a site. George’s bio is part of an American Master’s profile.