He sings with the strained discomfort of someone whose voice hasn't quite broken.

他紧张不适地唱着, 嗓音像个还未完全变声的人。

《柯林斯英汉双解大词典》

You know whose voice that was?

你知道是谁的声音吗？

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Whose voice is the loudest?

谁的声音最大？

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Tom Waits is a singer/songwriter whose voice sounds like a truck crossing over hundreds of stones.

VOA: special.2011.03.21

My quiet father whose voice could hardly be heard in church sang to the oysters!

VOA: special.2009.02.14

"If senators refuse to debate about a profound crisis affecting every single citizen, the nation must ask 'What do you fear?' ,'And whose voice do you speak and whose interest do you vote?" Republican Mitch McConnell of Kentucky disagreed, saying the bill will make soaring health care costs go even higher, and place a greater burden on average Americans.

VOA: standard.2009.11.23

All the same Susan Elan Jones, whose voice cuts through the general mud-slinging, got stuck in.

BBC: When David met Carwyn: the sequel

Nothing is cluttered, nor does anything compete with Mr. Thompson, whose voice hasn't lost a bit of its quality.

WSJ: Still Electric After All These Years | Richard Thompson | By Jim Fusilli

The seamstress whose feet were tired, the pastor whose voice echoes through the ages -- they weathered some hard winters.

WHITEHOUSE: President Obama on Dr. King's Legacy