Hi William, I've added your ABC notation support to Org-mode. Thanks for the contribution!
If you have time to add ob-ABC documentation to [1] that would be much appreciated but is not required. Cheers, Footnotes: [1] http://orgmode.org/worg/org-contrib/babel/languages.html -- Eric Schulte https://cs.unm.edu/~eschulte PGP: 0x614CA05D