答案：D

题目分析：句意：这是第一次我听到的最美的音乐。这里是固定句式This/It is the first time that+ have done；故选D。

点评：本题难度适中。固定句式是高中阶段必须掌握的句式，它不仅出现在单选里，还会在完形和短文改错中出现，提醒考生要牢记这些句式，并且有可能把它们用在写作中。

即学即练：This was the first time I ______ with such respect.

A. treated              B. had been treated

C. will be treated      D. have been treated

解析：B。句意：我是第一次受到这样的礼遇。