In the song “Extraordinary Girl” by Green Day, you can notice that the vocalist sings about an “extraordinary girl”, sometimes referring to her as he, and sometimes as she.
For example, at 2:51, you can hear:
Some days he feels like dying, some days it's not worth trying … she gets so sick of crying.
As far as I know, only she can be used to refer to a female. Is using he to refer to a female valid?