Is it possible to produce notes and in turn music using tesla coils?

http://www.boreme.com/boreme/funny-2008/twin-tesla-coils-mario-theme-p1.php

Yes, if you drive the coil with a variable frequency power supply modulated by music, you will hear the music in the arc produced by the coil.

It is possible. The "sparks" heat up air. Modulating the power of the coil will modulate the strength the air is heated. The heating and cooling causes pressure differences and sound is nothing but pressure differences.

The common Tesla coil isn't a very good music source:
http://www.youtube.com/watch?v=5PDqkG-9kys
(From a German Science-Quiz-Show).
A carrier wave Tesla coil (Fed by an AM transmitter) has much less power but a much better sound quality since you can control the sparks much more accurate.

The same thing is happening here but with a bit more fidelity. Later versions of this did not sound bad, at least for a youtube video.

That's not a Tesla coil. It's a really strong AM transmitter designed for high voltage using a conventional transformer. A CW (carrier wave) Tesla coil would be similar tough.

I seen this example on YouTube, http://www.youtube.com/watch?v=2Lr8tVC-Qx0&feature=related

I'm blown away at how an electric arc can produce the tones. How does it do it?

Same way a conventional speaker does it. Just compressing air. Instead of a membrane pushing the air, the air is heated and expands.

u ever hear an arc it makes a popping sound u produce that popping sound at a different frequency and it will make different sounds the higher the frequency the higher pitch and the louder like u plug a neon sign transformer in to the wall and drawl an arc u can hear the buzzing noise and that is the frequency of 50 to 60 herts from the rating of 50 to 60 herts im not to sure if that is the frequency of it when u short it out when u make an arc

Tesla coils can be used the way they are in these videos. I would like to see the MB's dedicate an entire show to tesla and everything he did. Plus advents like this one.

My 2 favs
http://www.youtube.com/watch?v=lSAExHBrfwU
and
http://www.youtube.com/watch?v=0sne_uI2Yq4

This sounds like one of the early FM modulated sound sources (such as early atari games). They probably had a way to modulate the electrical source, so a radio transmitter sounds like a potentially practical source.

Based on the video, I think this could make an exciting subject.

-Charles

its pretty much changing the frequency