Sia! Does that mean she's writing the songs? Or new music from SIA as well!
Björk | Christina Aguilera | Mariah Carey | Enya
Cher | Kate Bush | Sia | Barbra Streisand | Lana Del Rey | Lady Gaga | Alanis Morissette | Marina and The Diamonds | M.I.A. | Tori Amos| Florence & The Machine | Ellie Goulding | Sinéad O'Connor | Erykah Badu | Natalia Kills |