Why?
and thanx to others, i will try them.
MIDI is a protocol and not some audio (like mp3,wma ,aiff) format
these softwares can just recognise the frequencies of sound just like a tuner/midi pickup does and form a midi..its never going to be polyphonic due to its limitations and the end result will always be a incorrect file.
if this were possible we'd have the best pitch correcting softwares available by now