I've recorded a guitar track. Now I want to layer vocals on top of it. Obviously, I need to hear the guitar track while adding the vocals. How do I do that in GarageBand? If GarageBand can't manage that, which program should I be looking for?
but what about if I don't want the noise from the first track interfering as I record the second track? I tried to use headphones to listen without making the acoustic sound sloppy and the internal mic won't engage when I put anything in the headphone jack.