"The singing is melodious" 或 "The singing is pleasant to psten to" 是表达唱歌很好听的常用说法。

关于 "melodious"，它来自拉丁语 "melodiosus"，意思是有旋律的，和谐的。

例句：

Her voice was melodious and she sang with great emotion.
她的声音十分和谐，她唱歌充满强烈的情感。

The birds sang a melodious song that filled the air with their sweet voices.
鸟儿们唱着一首有旋律的歌曲，用它们甜美的声音充满了空气。

关于 "pleasant to psten to"，它意思是令人愉快的听起来。

例句：

The music was soft and pleasant to psten to, so everyone relaxed and enjoyed it.
音乐舒缓宜人，所以每个人都放松了，享受了音乐。

His voice was deep and pleasant to psten to, making everyone feel comfortable.
他的声音深沉宜人，让每个人都感到舒适。