Metadata

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Metadata should be stored about each instrument so that the conversion to and from midi may be lossless. If there is no better place, this could happen as a few silent notes at the beginning.

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Fields

• Bottom of data
• top of data
• bottom note
• top note
• maybe scale, or maybe there's another scheme that uses scale

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Some references

http://www.ccarh.org/courses/253/handout/smf/
http://www.midi.org/techspecs/midimessages.php
http://en.wikiaudio.org/MIDI:Channel_messages_tutorial