What is the equivalent to "You have such a beautiful singing voice!"?
Sorry, to ask in English, but since I really don't know how to ask, this is how I can best ask. (한국어로 답하시도 괜찮아요.)

There is a younger lady in our church who sings with the choir. She has such a spectacularly beautiful voice. I want to compliment her as I would someone in an English speaking church, but I don't know the natural way to pay this compliment. "노래를 잘 부르시네요" just doesn't sound to me like the same compliment, but it sounds strange to my ears to compliment her on her 아름다운 목소리.

Help me out, please. Please give me an example or two of how I can compliment someone on a beautiful singing voice.

Thank you.

Question

What is the equivalent to "You have such a beautiful singing voice!"?
Sorry, to ask in English, but since I really don't know how to ask, this is how I can best ask. (한국어로 답하시도 괜찮아요.)

There is a younger lady in our church who sings with the choir. She has such a spectacularly beautiful voice. I want to compliment her as I would someone in an English speaking church, but I don't know the natural way to pay this compliment. "노래를 잘 부르시네요" just doesn't sound to me like the same compliment, but it sounds strange to my ears to compliment her on her 아름다운 목소리.

Help me out, please. Please give me an example or two of how I can compliment someone on a beautiful singing voice.

Thank you.

Answer

The beautiful singing voice is often called as "꾀꼬리 같은 목소리(the voice like a nightingale)" in Korean.

You have such a beautiful singing voice!
정말 꾀꼬리 같은 목소리를 가졌네요!

Answer

노래도 잘 하시지만 목소리가 정말 예술이네요.

No doubt about your singing capabilities, and/but your voice is simply a "piece of art"

Answer

목소리가 (듣기에) 좋다
목소리가 (듣기에) 아름답다.

You have a beautiful singing voice.
(당신은) 정말 아름다운 목소리를 가지고 계시네요.

Your singing voice is really  beautiful.
(당신은) 목소리가 정말 아름다우시네요.

(당신은 가수처럼) 노래를 정말 잘하시네요. 
You are good at singing (like a singer).

Answer

I would say "목소리가 미성(美聲)이세요."

Answer

"노래[를] 잘 부르시네요", "노래 잘 하시네요" is enough, I suppose.