This is a very good article, Shadeed has done his homework, managers come in all shapes sizes and agendas, now I know a few Producer managers but being in some of the bands I played in a manager is essential, and a good manager that knows their role in your business is too, so this probably applies, make sure your manager is also able to invest in your vision and believes in what you are doing.....Shadeed this is excellent, I have had my share of good managers and bad ones....main thing is to have a manager that stays out of your actual business whether its your production itself or if you are a musician out of how and what you are playing, leave that to the band or your production team...LOL.