Aya Hirano is a seiyuu and a J-pop singer. She is an incredible star, and no wonder why. At only age 22, she has done several roles for animes, TV commercials and she has released 3 albums, if not mistaken.
She's a very talented girl, she was a perfect choice for Amane Misa in Death Note. She manipulates her voice greatly, in the way that she has done some many different characters, and I believe that is awesome.
Her awesome roles include Layla from NANA, Hahuri from The Melancholy of Haruhi Suzumiya, and very others. I just enjoy her work very much and I hope she continues for many years to come.
p.s: she has awesome songs actually, I do recommend.