Yeah, HOW TO SING THE BLUES has been posted here a few times:

21 Aug 1997
26 Nov 1997
14 Oct 1998
08 Jan 1999
23 Jul 1999
25 Nov 1999
28 Mar 2000
22 Jan 2001
09 Apr 2001
30 Aug 2001
30 Aug 2001

And that doesn't count the ones who only posted links to other sites, or links to previous threads…

Without the search function, you wouldn't have found ALL of those threads, but you would have found FIVE of them if you had only used the FILTER to search for "How to Sing the Blues."

I'm still waiting for a true folklorist to come along and make a detailed comparison of all those versions, to see how the joke has evolved.