An '''impromptu''' is a short, single movement, instrumental piece of music, composed to sound as if it has been improvised. It nearly always refers to a piano piece, although impromptus have been written for the [[violin]], [[guitar]] etc., | An '''impromptu''' is a short, single movement, instrumental piece of music, composed to sound as if it has been improvised. It nearly always refers to a piano piece, although impromptus have been written for the [[violin]], [[guitar]] etc., |