Unlike its early predecessors, the latest version of GarageBand features a built-in tuner that makes it easier than ever to tune an instrument before recording it. Whether you are plugging your electric guitar directly into your computer, or miking a cello, the GarageBand tuner is a nimble tool that renders portable electronic tuners a thing of the past. It can discern pitch for a variety of instruments with an easy-to-read LCD display.
Things You'll Need:
Things You Will Need
Connect your instrument to your computer using an instrument cable (or microphone cable, if the instrument is miked).
Select a real instrument track in the recording field so you can hear your instrument in the monitors or on headphones.
Select "Control" in the GarageBand menu. Then select "Show Tuner" in LCD from the drop-down menu. Alternately, press "Command-F" to make the tuner appear.
Play your instrument to illuminate the tuner on the screen. A pitch will light up, with sharp and flat displays indicating whether your instrument is in tune.