2 sentences

1. 在五音“宫商角徵羽”中，宫音居首。

   zài wǔ​yīn“ gōng shāng jué zhǐ yǔ” zhōng, gōng​yīn jū​shǒu.

   Among the five notes 'Gong, Shang, Jue, Zhi, Yu', Gong is the first.

   Source: Dong Chinese Dictionary

2. 五音之中的商音通常比较清越。

   wǔ​yīn zhī​zhōng de shāng yīn tōng​cháng bǐ​jiào qīng​yuè.

   The 'shang' note of the five traditional Chinese tones is usually clear and resonant.

   Source: Dong Chinese Dictionary