Q - R
quarter note

A note having the duration of 1/4 of a whole note, which is usually one measure in duration.

Real Instrument

GarageBand's term for an effect preset for sound that is either input or imported into GarageBand.

region

In GarageBand, a unit of recorded sound or MIDI information.

reverb

An effect that seeks to emulate the reflections of sound in space. An example would be that a shower stall is a small reverberant space.

root note

Usually the beginning note for a scale. The fundamental or defining note for a key or a chord.

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