immediate bend: A bending effect that is caused by playing a note and then immediately bending it up.

impulsive decay: A type of note decay in which the tone produced begins to fade as soon as the next note is played.

input jack; jack: The socket used for connecting the guitar cord to the amplifier.

intervals: The gap between musical notes, which are measured in half steps and whole steps.

intonation: The accuracy of the pitches produced by fretting.