Commissioned by Paul Whiteman for a concert called "An Experiment in Modern Music," it opens with the aforementioned glissando for clarinet that many classical soloists have trouble performing.   
Ross Gorman improvised the music that begins this work as a gag, but the composer liked it enough to keep it.  Commissioned by Paul Whiteman for a concert called "An Experiment in Modern Music," it opens with the aforementioned glissando for clarinet that many classical soloists have trouble performing.   There are two orchestrations by Ferde Grofe, a later one for a full orchestra and an original for a jazz band.  FTP, name this work that melds jazz and classical styles, a popular piano concerto by George Gershwin.
Ross Gorman improvised the music that begins this work as a gag, but the composer liked it enough to keep it.  
Rhapsody in Blue