Is the MIDI file just the melody track, or are there also accompaniment tracks? If there are accompaniment tracks in the MIDI file, you'll probably get better results.

Unless it's an original melody (such as your own), you might just want to try one of the guitar tab sites which have chords for many, many songs. Or try finding another MIDI file of the same song which has accompaniment, which, again, makes it easier to figure out the chords.

You can also google the song + "sheet music" and look at resulting images, which often give you at least the first page of the sheet music. That might be enough to get you going to figure out the rest.

Just some things to try.

John

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