2 sentences for 高音 (gāo​yīn — high pitch)

1. 这位歌手的高音唱得非常嘹亮。

   zhè wèi gē​shǒu de gāo​yīn chàng de fēi​cháng liáo​liàng.

   The singer's high notes are very clear and resonant.

   Source: Dong Chinese Dictionary

2. 这位歌手底气很足，高音唱得很轻松。

   zhè wèi gē​shǒu dǐ​qì hěn zú, gāo​yīn chàng de hěn qīng​sōng.

   This singer has great lung capacity and hits the high notes with ease.

   Source: Dong Chinese Dictionary