Here's 24 examples of unusual or graphic musical notation, from the cuneiform markings of the oldest song in the world, to the graphic notation of Stockhausen, Crumb, Cage and Eno, to the painted musical inventions of Adolph Wolfli. Click each picture for a larger image.
Key to composers of above works, arranged by row, left to right:
Row 2: John Cage, Unknown, Cornelius Cardew
Row 5: Iannis Xenakis, John Stump, Unknown
Row 6: Unknown (oldest song in the world), Unknown, Unknown
Row 8: Karlheinz Stockhausen, Karlheinz Stockhausen, Unknown