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					Originally Posted by Elfwreck  Do you know the song was there to entertain? I got the impression that it was used as an example to prove a point--that it was part of the educational value of the lecture, not used as background music to keep people interested. | 
	
 In most cases, I haven't found the music to be entertaining at all.
Most lectures that use examples like this cut them out before releasing them online. I find them less useful because of it.