When necessary, I provide Mastering for Singles, but generally avoid it for EPs or full-length projects. I work with several great Mastering Engineers (M.E.) & HIGHLY recommend that you use them. It’s always a good idea to have a second set of ears and skills on your project. Lastly, in many cases, the M.E.’s that I work with can do the job not only much better, but more inexpensively than I can.