In music, the term attack refers to the manner in which a note is performed by the musician, whether decisive and quick, or smooth and slow. More often, however, the word attack is used to refer to the initial part of the envelope of sound. The sound envelope also includes decay and sustain. An attack can be slow, meaning the initiation of the sounding of the note takes place slowly, starting softly at first, then coming to the full volume of the note. Or an attack can be fast, reaching full volume very quickly or at the moment the note is sounded.<br>