Interactive Notation Editor based on Vexflow music notation library

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Project Budget (USD)
$250 - $750

Project Description:
Hello All,

I need to enhance an existing HTML5/JS application based on Vexflow music notation library.
There is a working example of the application
I need to get this application extended with the following features
- Possibility of adding additional music staff with possibility of selecting type of musical instruments
- Enhanced editin features (currently only allows to add and replace existing note and to delete)
- Enhanced play feature (such as play one note, play range, play all or one staff etc.)
- Save and Open compositions
- Export the music in MusicXML and other standards
- Export to MP3 and MIDI

You will obviously need HTML5/Javascript skills as well as some background in music theory

Additional Project Description:
12/28/2012 at 10:34 CET
Please see attached Technical requirement for clarified description

12/28/2012 at 12:45 CET
Also, the project will require some understanding on the notation in music
Here are some basics that could be useful

12/28/2012 at 23:12 CET
Updated Technical Requirements document uploaded

12/28/2012 at 23:16 CET
Cannot upload second doc file,
please see this link for updated document:

Skills required:
CSS, Javascript, Software Architecture, User Interface / IA, XML
Additional Files: Online+Notation+Application+-Scorewriter+-+TechReq.docx
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