[hnote]

Something similar: At the last Music Hack Day in Boston Joe Berkovitz of Noteflight, an online music score editor, implemented the Music Autocomplete idea using Peachnote's data, see http://www.youtube.com/watch?v=I4-eF02Wmdw.

By the way, all functionality in Peachnote is exposed vie an API, so it's easy to experiment with.

Generally, if anybody here is interested in music n-grams and in doing something cool with the largest symbolic music data set available, please get in touch!

(I develop Peachnote)

PS: a paper on Peachnote is available at http://www.viro.name/papers/ISMIR11.pdf