Midi output is essential. Good keyboards: Click "File" and select "New Project," then click on the keyboard icon that appears in the window, indicating GarageBand recognizes the connected keyboard and is ready to communicate with the instrument for recording music, practicing with the built-in keyboard lessons or creating mix tracks with the keyboard. A way to tell if your computer has recognized the controller is by hitting a note on your MIDI Controller, and seeing if it registers that note at the top of the DAW. Open an already established project, or choose "New Project" from the list of choices on the left. But hooking up a keyboard is really very simple: There are many ways of getting sound into GarageBand, some better than others.
You will find that you don't have much control over the sound quality, the levels and the number of inputs.
How to Set Up a MIDI Instrument in iLife’s GarageBand ’11
Thankyou Best regards, Sean Malvaroza. If you have the older version of Garageband. A drawback with USB devices is that there often is some latency - a delay in the processing of the sound signal. What you need is an audio interface. This is legitimately important. You will find that you don't have much control over the sound quality, the levels and the number of inputs. But hooking up a keyboard is really very simple: