In my book, I mentioned Gershwin’s Rhapsody In Blue as the earliest example of jazz in an orchestral composition, and I said that every serious music student, classical and modern, should get acquainted with it.
After you have listened to the orchestral version, then you should hear Alpin Hong’s rendition of the solo piano version.
Also, many people who love Ravel’s orchestral version of pictures at an exhibition have never heard the piano solo version as originally written by Mussorgsky. (I Hope I got that right.) Alpin Hong performs that as well.
In my book, I quoted a section of this very interesting talk Mr Hong gave at TEDx, ‘interesting’ even to non-musicians. Take a look: