Senza sordina, or senza sordine

(plural) without the mute; compare con sordina in this list; see also Sordina. Note: sordina, with plural sordine, is strictly correct Italian, but the forms con sordino and con sordini are much more commonly used as terms in music. In piano music (notably in Beethoven's Moonlight Sonata), senza sordini or senza sordina (or some variant) is sometimes used to mean keep the sustain pedal depressed, since the sustain pedal lifts the dampers off the strings, with the effect that all notes are sustained indefinitely.