In this classic Sesame Street clip, we take a visit to the saxophone factory to see how the horn is made. Throughout, a delightful free jazz soundtrack acts as foley sound, instead of us hearing the (probably pretty boring) sounds of the actual factory. A lot of work goes into making one of these horns!
Also relevant, this 14-second clip from The Simpsons in which Homer performs his composition "Saxamaphone" [sic]:
And if you like actual narration about horn production, check out this How It's Made clip about making trumpets -- some of the processes are very similar:
(Via The Kid Should See This.)