Keep it short.
Musicians in general don't like to read. I have seen clients write paragraphs upon paragraphs of changes that they'd like to have made. What a session musician is looking for is quick, precise feedback. To the point. No graphs and charts please!
Provide clear references.
Youtube links are a quick way to communicate an idea or direction you'd like to take a project. Especially if you are working online with a session musician, it's important to get an idea of your taste so they know that you like.
Mention changes based on timecode of session.
Ex: From 2:22 - 2:47 I'd like to have a 4 on the floor drum beat. If you are vague about where you want the musician to modify or make a change to your session they will unclear of what you like and what you'd like changed. The time codes on the player in your StudioPros account is a fail proof way of communicating exactly where in the session you'd like to change the project.
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