Originally of a voice: clear and resonant. In later use more generally of sound, esp. musical sound: clear, ringing, and typically high-pitched…

Of sounds: Having a clear gentle resonance like that of silver; soft-toned, melodious.

Of sounds: Sweet- or silver-toned. Obsolete. rare.

Of sound: not discordant or harsh, perfectly in tune, clear and even in tone; (Music and Acoustics) produced by a vibration of a single frequency…

Having a clear gentle metallic resonance; silver-toned, melodious.

figurative. Of music or other sound: clear and pure in tone.