Apple GarageBand '09 - Manual (Page 57)

Chapter 5 Tutorial 3: Recording Vocals and Musical Instruments 57
Tuning Your Guitar in GarageBand
GarageBand includes an instrument tuner that you can use to check the tuning of a
guitar, bass, or other instrument connected to your computer. The instrument tuner
works with Real Instruments, but not with Software Instruments.
The instrument tuner shows a horizontal scale with the note name displayed in the
center of the scale. When you play a single note on your Real Instrument, the pitch is
shown in relation to the correct pitch for the note displayed.
To use the instrument tuner:
1 Make sure the Real Instrument you want to tune is connected to your computer.
2 Select the Real Instrument track for the instrument you want to tune.
3 In the LCD, choose Tuner mode, or choose Control > “Show Tuner in LCD.”
4 Play a single note on your instrument and watch the tuner.
As you play, the tuner shows the note name of the closest note. If the note is not in
tune, the note name and the tuner glow red, and a vertical red bar appears, showing
whether the note is sharp or flat.
The bar appears to the right of the note name if the note is sharp, and to the left if the
note is flat. When the note is in tune, the note name and the tuner scale glow blue, and
the vertical bar disappears.
Be sure to play only a single note at a time while tuning. The instrument tuner can’t
tune to a chord, nor can it tune if you play different notes rapidly.