Home : Tune Toys : GIF Jam 
Step 1(Optional) Adjust URL for image (must be a GIF) and press 'Update'.
Step 2Twiddle the parameters below the image.
Step 3Click anywhere on the image. The RGB values of the pixels at that location will be used to generate MIDI music.
Step 4Click on the piano-roll image of the MIDI file to play the results.
Image URL:
The image:
Click anywhere on the image to the left,
and you'll end up with music here.
Scan Type

GIF Jam is implemented with KeyKit, and here is the source code