"Somewhere Over The Rainbow", By Harold Arlen and and E.Y Harburg for the 1939 movie The Wizard Of Oz starring Judy Garland. I play 2 versions, the original version and original chord progression and then a jazz chord substitution version with reharmonization. There is a short explanation of 2 techniques. The use of IIVI approach chords and triton substitutes. Please see my book for more details on jazz theory here: http://www.kenthewitt.com/id31.html