User blog comment:IamJakuhoRaikoben/Sorcerer Magazine, Issue 17: May 2013/@comment-10425110-20130605131637/@comment-5840892-20130605201135

They are looking for a new seiyuu for Lucy because Hirano Aya's losing her voice. Evidently it's been happening slowly over the years, I think it's because of some throat trouble. People who sing to much at high notes, and do high voices can harm their throats that way and lose their ability to sing and voice act from it. I personal experience with that happening to someone I knew. My chorus teacher in 6th Grade had to retire from teaching her subject for just that reason. In 7th grade, we got someone who could sing opera, it was...interesting to say the least.