perfect unison

Matching tones sung together

Perfect unison is two voices or instruments sounding the same pitch simultaneously—not a harmony, but an exact match.

In music theory, it's the interval of zero semitones, the only interval where both notes are identical.

The phrase sometimes appears figuratively for complete agreement or synchronization: The committee voted in perfect unison.

Related

one voice · concord · harmony · oneness · resonance · note for note · alignment · same wavelength · interval · fifth · frequency · pitch · tutti · balance · scale · homophony · agreement · coherence

Opposites
intervallic distance

perfect unisondissonance

Lack of harmony

tritone · discord · clash · semitone · octave

coordination/synchronization

perfect unisoncacophony

Harsh, clashing sounds

discord · disharmony · chaos · dissonance · polyphony

Family

perfect, perfects, perfected, perfecting, perfection, perfections, perfectly, imperfect, imperfectly

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Abstract · Positive · Rated G