2 sentences

1. 一定要是难听的歌吗？

   yī​dìng yào shì nán​tīng de gē ma?

   Does it have to be a bad song?

   Source: AI Challenger 2017

2. 过一段时间以后，小提琴就会走调儿，而且声音难听。

   guò yī duàn shí​jiān yǐ​hòu, xiǎo​tí​qín jiù huì zǒu diào​r, ér​qiě shēng​yīn nán​tīng.

   In time a violin goes out of tune, and sounds awful.

   Source: UM-Corpus: Education