http://trillian.mit.edu/~jc/cgi/abc/TuneFind?P=jenny+lind+polka&F0=find+%28min%29Not sure how that link will end up formatted, it may hit a line break and be difficult to copy. If so use this one:
http://trillian.mit.edu/~jc/music/abc/FindTune.html
and just type "jenny lind polka" in the box.