All'unisono (It.: ‘at the unison’).
- Ebenezer Prout
- and Robert Donington
An instruction that any parts thus shown are to be taken as one part, either at the same pitch or (where the range of the voice or instrument implies it) at the octave (or double octave) above or below. It is frequently abbreviated to ‘unis.’. In orchestral scores the term is used to show that two or more instruments whose parts are written on the same staff are to play in unison; in the later 19th century the words ...