A tremulous note filled the air around him, like a spirit amazed to find itself free from the silence it had thought would be eternal.

"I, um ... " Her voice trailed away, the sound reminding him of a tremulous note on a reed whistle.

They have a call that consists of five tremulous evenly-pitched notes, sometimes with the notes merging into a trill.

The Peruvian's voice revealed a tremulous note, and it was obvious that McIntyre's inquiries were making him nervous.

The woman's tone was bitter, then her voice broke on a tremulous note and both Bay and Pol could hear her weeping.

Her voice took on a tremulous note, letting Valentina know she was getting excited about the idea.

A new, and more agreeably tremulous, note could be heard beneath the soft susurrus of distraught and frightened voices.

And as the final, tremulous note faded in an extended diminuendo, a woman dabbed her eyes with a handkerchief before leaning her head on a companion's shoulder.

The mousemaid Rose sat quite still as the last tremulous notes of her song hovered on the evening air.