We don't call spoons forks, convertibles rocket launchers, or operas concertos. So, we don't call things that aren't songs songs. I'll end my rant about the use of the word 'song' to cover things that aren't.
Ursa_minor - 2010-10-30 Thanks for clearing that up, harriet.
memedumpster - 2010-10-30 The Internet has taught me that anything can be a rocket launcher, fork, or concerto.