Hey Ducky123 - There is one thing that I'm more than happy to do for you if you're interested:
You've played with Noteworthy Composer enough to know that the sound quality you get out of it is...less than stellar, I'm sure.
That isn't Noteworthy's fault. Noteworthy just creates MIDI data (data that tells some OTHER device what note to play and when on which instrument with what effects and properties). The thing playing it back, unless you have a specialized setup, is the Windows General Midi synth.
The Windows GM Synth is a collection of samples - individually recorded notes of live sound. Basically, Windows has a collection of sounds on standby and MIDI Files by default talk to the GM Synth and tell it what sounds to play and when, etc.
Naturally, because it's all most people need and Microsoft doesn't want to waste a ton of hard drive space, RAM and processing power on MIDI playback, the sound is pretty horrible - good as a reference but not much else. The total data for those samples is somewhere around 4MB. You can't do much with that.
Anyway, I'm getting off-track!
You may have noticed if you listened to our old singing projects that the background music sounds significantly better than that. That's because I'm using dedicated software that contains MUCH more realistic samples, covering a vast array of instruments and performance styles. This software doesn't come cheap BUT...and here's where I come in:
I'm happy to take your finished MIDI file and run it through my samplers to generate an MP3 for you if you'd like! I won't edit the MIDI any more than is necessary to get it to play nice with my software (which will mainly just involve setting velocity values, CC controllers and note timings and assigning notes to articulations in such a way that playback through my samplers sounds natural).
I've actually done a lot of software upgrades since the last singing project we've done here, which means the results will actually be significantly better than back when we did them before, due to the better technology (funny what 6 years will do).

Just for reference, in a very short time (so musical expression isn't quite perfect, blah blah blah blah) I threw together this recreation by ear of part of the opening to the Great Migration track from the first LBT using these samplers. That's the kind of quality we can generate from your MIDI file.
https://drive.google.com/open?id=0B96eLzW5-...ZHpGU1I3UHJ3TUkThat's the difference between 4MB of sample data and about 1.2 TB of it.

Whatever instruments or performance styles your song needs, I'm 99.9% confident I have it somewhere in this collection so no matter the song we can make it work.
Let me know if that sounds interesting! When you're done with the MIDI, just pass it over to me and I'll export an MP3 for ya.
