1、words of a song：

To be an excellent singer, one must comprehend words of a song and its temperament deeply.

作为优秀歌手，对歌词和乐律要有深刻了解。

2、lyric：英[ˈlɪrɪk]美[ˈlɪrɪk]。

I also corrected several mistakes in the lyric by the way.

我顺便还更正了歌词中的几处错误的地方。