here some details: http://googleblog.blogspot.com/2011/06/doodle-for-instrument...

from a superficial look, it seems like the sound is actually being played through flash. it looks like the doodle is canvas though, which suggests the interface is in javascript.

too bad they didn't synthesize the sound with javascript as well. their web audio api is great. firefox has a (somewhat) equivalent api. :)

It really doesn't seem like sound playback is there yet, except in Flash.

look more into the apis i referenced. not only is javascript playback there, but even the synthesis is possible through javascript.

<iframe name="wgjf" style="display:none" src="/blank.html" onload="google.j.l()" onerror="google.j.e()"></iframe>

it doesn't look very "flash"

It creates a flash object on the fly with javascript:

  <object id="guitar11-sound-player" width="0" height="0"
   type="application/x-shockwave-flash" 
   codebase="http://download.macromedia.com/pub/shockwave
   /cabs/flash/swflash.cab#version=9,0,0,0" 
   classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000">

And previous works by Chen Alexander, one of the leaders behind this: http://www.mta.me/ http://blog.chenalexander.com/2011/conductor-mta/