Hi.
1. Well, it depends on what you want.
Let's say, if you need just a stereo track mastering, then please send me your mix (final wave file of your project).
But if you need steam or 5.1 mastering.....that's another story.
2. Yes, I have different styles demos, BUT it's not your track, not your music. So, I can give you the best Michael Jackson's song, but it's not YOUR song. That's why I make a free sample for you. You can send me your song and I'll make a test sample (30-60 sec) for FREE. And then you'll decide. Risk free, remember! That's my strategy, long life business.