And he's been singing out of tune. 
他唱歌老跑调。
Don't be so mean. I think he sings well. 
不要那么刻薄。我觉得他唱得很好。
He just hasn't chosen the right song yet. 
他只是没有选对歌。
So what kind of song is he good at? 
你觉得他擅长唱什么类型的歌?
Rap. 
Rap。
I doubt it. 
我表示怀疑。
Anyway,I can't stand it anymore. 
不管怎样,我受不了他的歌声了。
I've got to stop him. 
我要去阻止他。
Come on. We're here for fun. 
算了吧。我们来这里是来玩的。
It's not a contest or something. 
这不是比赛什么的。
Don't disturb him. 
不要打断他。
He's been under a lot of pressure recently. 
他最近面临很大压力。
Let him sing as long as he's happy. 
只要他高兴就让他唱吧。
Alright then. 
那好吧。