From the timidity and loss of self-confidence of "NEVER EVER", the loneliness and despair of "Endless sorrow" to the hope and unity of "UNITE!". What were the incidents which led to this desirable reversal drama? -- I suppose there were mainly two. One would be that she came to have confidence in others little by little while preparing for the Dome Tour (June 22 to July 7) together with many staffs. And the other would be the starting or the restarting of the association with Nagase Tomoya. It was later in September that she made it public. But, as she told what suggested it in a concert of the Dome Tour, I suppose it had started just around the time she wrote "UNITE!". (Otherwise, if she had recovered by herself without such a favourable turn in her private life, there is no words to describe it but amazing mental power.)
　Speaking of the Dome Tour, she fell down from the stage in a reharsal and got injured in the ligament of her leg. But as she was helped by many staffs after the accident, her mental conditions got even better. Moreover, after the concert in Osaka, she found a kindred spirit in D.A.I-san (Mr. Nagao Dai), whom she had not been on friendly terms with, and they tried to collaborate in composing. The song made in this way was "Dearest", a warm and tender song at a midium tempo, different from her previous songs in rock style.

[...]

The lyrics of "A Song is born" is, in fact, almost as same as the opening message of the Dome Tour with slight difference. But it doesn't mean that she was neglect in making it up. The incident of Sept. 11 certainly shocked her, but when she was going to write a lyrics from what she thought then, she noticed she had already uttered such words. In other words, her social concern had started to grow before the incident.