好听

pleasant to hear; nice to listen to; pleasant-sounding; melodious; musical; sweet-sounding; euphonious

轻柔

soft; gentle; tender; delicate; mild; gently; softly; tenderly; lightly; delicately; light and soft

安静

quiet; calm; peaceful; tranquil; silent; still; undisturbed; serene; noiseless; hushed; restful; quietly; silently; peacefully; calmly; piano; quiet down; quieten down; hush down; settle down; pipe down; lull; tranquilize; quietness; tranquility; silence; peace; stillness; serenity; quietude; hush; in silence; [music]p. (short for piano, used as an instruction for telling you to play or sing quietly)