A term often used in music indicating that a passage should be played softly or gently.

A soft or subdued sound or tone.

हल्का या मद्धम स्वर

English Usage: She spoke in a sotto voice so as not to disturb anyone.

Hindi Usage: उसने किसी को परेशान न करने के लिए हल्की आवाज में बात की।

In a low or quiet manner.

कम आवाज में

English Usage: He whispered sotto to his friend during the lecture.

Hindi Usage: उसने व्याख्यान के दौरान अपने दोस्त से कम आवाज में कहा।