I wonder whether someone with some working experience could assist me with a project. Firstly I have a Macbook Pro 15inch with Garage band installed. I would like to record a singer with a piano. I would like to buy 2 high quality USB mics, however there is only one (1) USB port into my mac book, so is there an adapter? What Mics would be recommend for this project? Is Garageband appropriate for this project and if so are there any good tutorials on how to use it effectively? Any assistance you could give me would be much appreciated. Kind Regards, Tim.