Acciaccatura (It.; Fr. pincé étouffé; Ger. Zusammenschlag).
- Robert E. Seletsky
A ‘crushed note’. C.P.E. Bach (1753) and F.W. Marpurg (1755), who provided the German translation Zusammenschlag, defined the acciaccatura as a non-harmonic note played a tone or semitone below any of the main notes in arpeggiated chords, and immediately released. In 18th-century German sources such as C.P.E. Bach's treatise, it was frequently indicated with an upward diagonal stroke through the stem between the harmonic members of the chord. In melodic usage, the same writers classed the unprepared, simultaneously struck dissonant 2nd followed by the release of the lower note as a form of mordent. The Italian theorists Francesco Gasparini (...