Conver Notation (4 Parts) to MIDI file.

I have some music notations which is in 4 parts harmony. It needs to be converted to a MIDI file to be played back track by track for learning purpose. Simple task. Around 20 song sheets are there. Most of them are less than 2 minutes or with same stanza. I will pay $ 2 per song sheet conversion. So 20 @ $ 2= $40. Please bid if you agree with this. You have a time frame of 2 weeks for the conversion. Only experts needs to bid for this project.