The old switchboard hummed with familiar dialling tones as we waited for the connection.

Linguists analyze contour tones to understand how pitch changes within a syllable convey meaning.

The vintage organ produced rich engaged tones whenever the stops were pulled.

She studied the twelve-tone technique to better understand Schoenberg's compositions.

Although most people use smartphones now, my grandmother still prefers touch-tone dialing on her landline because it's familiar.

In the late 1990s, many carriers experimented with video dial tone as a way to deliver home shopping and on-demand films over the telephone network.

Many older offices still use touch-tone dialling for their internal phone systems.

The composer deliberately inserted non-harmonic tones to create tension before the resolution.

The melody briefly included a non-harmonic tone that created dissonance between the two chords.

The composer used a whole-tone scale to create an ambiguous, dreamlike atmosphere.