Correct

左嗓子

/ zuǒ sǎngzi / 
Strokes

Definition

off-key singing voice/sb who sings off-key

Example

As a Noun

out-of-key/tune voice

1
Wǒ
我
shēngjiù
生就
yī
一
fù
副
zuǒ
左
sǎngzi
嗓子
  
,
chàng
唱
bù
不
le
了
gē
歌
  
。

I can't sing. When I sing, I always get out of tune.

As a Noun

person who sings out of key/tune