I can't identify this song...

http://images.wikia.com/muppet/images/d/da/Rowlf-chicken223.ogg

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Clarification of Question by scarecroe-ga on 07 Oct 2006 21:04 PDT

To clarify, this song was featured on The Muppet Show as performed by
its resident pianist, Rowlf the Dog. The Muppet Show didn't use
original music other than some light underscore here and there.
Featured musical numbers such as this came from other sources 99% of
the time -- especially Rowlf's piano spots.

Regarding the Flea Waltz reply, it sounds like it could be a
variation, but after 30 minutes of comparing the two, I'm not
convinced that the Rowlf-chicken223.ogg file couldn't be it's own
composition uninfluenced by Der Flohwalzer.

I believe this song is called "Der Flohwalzer" or "The Flea March"
found at http://www.sibeliusmusic.com/cgi-bin/show_score.pl?com=streammp3&scoreid=90677


Hope this helps!