Acciaccatura vs. Appoggiatura

Acciaccaturanoun

(music) A short grace note (theoretically taking no time at all), occurring on the beat occupied by the main note to which it is prefixed, one scale-step higher or lower than that main note. (Sometimes equivalent, therefore, to a short appoggiatura, but in Baroque music interpreted differently and more strictly.) Written as a note lighter in appearance, typically a quaver (eighth note), with an oblique stroke through the stem.

Acciaccaturanoun

A short grace note, one semitone below the note to which it is prefixed; - used especially in organ music. Now used as equivalent to the short appoggiatura.

Acciaccaturanoun

an embellishing note usually written in smaller size

Appoggiaturanoun

(music) A type of musical ornament, falling on the beat, which often creates a suspension and subtracts for itself half the time value of the principal note which follows.

Appoggiaturanoun

an embellishing note usually written in smaller size

Appoggiatura

An appoggiatura ( ə-POJ-ə-TURE-ə, Italian: [appoddʒaˈtuːra]; German: Vorschlag or Vorhalt; French: port de voix) is a musical ornament that consists of an added non-chord note in a melody that is resolved to the regular note of the chord. By putting the non-chord tone on a strong beat, (typically the first or third beats of the measure, in 4/4 time) this accents the appoggiatura note, which also delays the appearance of the principal, expected chord note.