OLEO
Oleo
"Oleo" is a hard bop composition by Sonny Rollins, written in 1954. It is one of the most popular pieces to feature rhythm changes, one of many contrafacts of George Gershwin's I Got Rhythm. The performer is expected to improvise the B section, as only the A section is transcribed.The above text is a snippet from Wikipedia: Oleo (song)
and as such is available under the Creative Commons Attribution/Share-Alike License.