Interestingly, first real use the Homebrew Computer Club came up with for the Altair 8800 was making music:
<a href="http://startup.nmnaturalhistory.org/gallery/story.php?ii=46" rel="nofollow">http://startup.nmnaturalhistory.org/gallery/story.php?ii=46</a><p>Never realised “Fool on the Hill” was the first tune demonstrated, had thought it was "Daisy".