"第一首歌"是个多义词，它可以指第一首歌（洪爱莉演唱）,第一首歌（谢彬彬演唱）,第一首歌（第一首歌曲）,第一首歌（赵学平原创《第一首歌》）。
第一首歌《蓝月亮》效果还不算太差，只是所有的人自始至终都在说话。
The first song, "Blue Moon," didn't go too badly except that everyone talked throughout.
她4岁开始学习钢琴，9岁时就在舞台上唱了第一首歌。
She started to learn the piano at the age of 4, and she sang her first song on the stage when she was 9 years old.
“来吧！别这么无聊。我来选第一首歌。”艾莉森开始唱歌。
"Come on! Don't be boring. I'll pick the first song," Alison started singing.
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