I am a programmer with some knowledge of playing instruments, but not much about MIDI and that stuff. But I would like to make an app (Mac app) for simple music notation. I would then like to be able to play back the notes in the app. My question is how that would be done. My guess is that I need to attach some sound bank/synthesizer of sorts which then is controlled via Core Midi to play the notes? I am talking about the simplest possible setup here.