Found this posting on the MCO forums and though that I'd share with you guys. The link for the MP3 is at the end of this post.
> > First you'll hear a 10-cylinder, 750 horsepower Asiatech F1
> > engine being warmed up. Then it performs a rousing version
> > of "When The Saints Come Marching In", to the delight of
> > assembled pit staff and journalists.
> >
> > Here's how the magic was achieved (technical/musical details
> > via F1 Racing magazine):
> >
> > As we all know, a V10 engine produces five combustions per
> > revolution at a frequency per second of 60/(5 x revs per
> > minute), which equals 12/rpm. Therefore, to work out the
> > revs you need to hit a particular musical note, you multiply
> > the note's frequency by 12. To play a 440Hz 'A', for example,
> > you need 5,280rpm. For 'C', use 3,139rpm, for 'F' 4,191rpm,
> > and so on.
> >
> >
> > Asiatech's French technicians (the engine, despite its name,
> > is derived from a Peugeot design) simply programmed their
> > engine to run through the various rev/note ranges in the
> > correct sequence. The result is delightful. And think of the
> > possibilities - BMW's F1 engine, which howls all the way to
> > 19,050rpm, could rip through the entire Hendrix songbook.
> >
> > Even better: imagine a massed NASCAR choir performing "The
> > Star Spangled Banner"! Being eight-cylinder engines, the
> > frequency per second would be 60/(4 x revs), which means
> > you'd multiply the note frequencies by 15 instead of 12: 'A'
> > would arrive at 6,600rpm, 'C' at 3,923rpm, 'F' at 5,238rpm,
> > etc.
> >
> > Mark my words, someone will be getting rich at Daytona next
> > year selling a CD of NASCAR patriotic anthems. Send some of
> > the royalties my way.
http://www.magma.ca/~fierogt/Chauffe2.mp3 -- 274KB
Author