This morning, J.K. Rowling posted yet another brief but charming window into the Harry Potter world on Pottermore, the official headquarters for Potterheads. This particular post is actually a biography of Celestina Warbeck, a character who was rarely discussed and never actually “seen” in any of the Potter books, but whom Rowling refers to as a “favourite.” Warbeck is pitched as a “singing sensation” and Today even has posted a song by her called “You Stole My Cauldron But You Can’t Have My Heart,” which is not the most inventive title Ms. Rowling has ever come up with …
