Crossword puzzle clue "changed an author's text"

Changed an author's text

Musician who once changed the middle letter of her stage name to a dollar sign, but later changed it back to a boring old "S"

Changed the text

Back-of-the-text text

"Author! Author!" author Horovitz

"It's ___ plan that can't be changed"

Youth changed into a bird, in a Greek myth

"You haven't changed ___!": 2 wds.