sweet-voiced russian

• сладкоголо́сый

  sweet-voiced, melodious, dulcet

• сладкогла́сный

  sweet-voiced, mellifluous, sweet-sounding

• звонкоголо́сый

  clear-voiced, sweet-voiced, silver-voiced

Examples

• Сладкогласный соловей пел в саду всю ночь.

  The sweet-voiced nightingale sang in the garden all night.