As the engine warms up, the music is modified to a sustained even tone.

"Soft and low notes were often precarious; sustained tones were not always steady."

Some tremulous sustained tones were understandable, given the pressure.

Her voice was somewhat hard edged in the middle range and quavered on full-voiced sustained tones.

It provides a sustained, singing tone on the string which is magnetically vibrated.

The end is a fading away on a sustained tone.

His sustained tones, especially in midrange, are often wobbly.

Vibrato is the pulse or wave in a sustained tone.

The first verse's baritonal pedal point is reversed at the end, with sustained tones in the women's voices.

While sustained tones were played on the violin and guitar, a woman in white gestured with slender poles.