J.K. Rowling, of Harry Potter fame, was announced on Sunday as the true author of the novel, The Cuckoo’s Calling, published under the pseudonym Robert Galbraith. The Cuckoo’s Calling is mystery novel that follows war veteran turned private investigator, Cormoran Strike, as he investigates the death of a supermodel. The novel had received good reviews prior to the reveal, but sales skyrocketed after The Sunday Times revealed the author’s real identity.

While many fans may be surprised at this turn of events, the practice of established authors writing under multiple names is fairly common. Many authors publish under different names in order to cross genres, such as romance novelist Nora Roberts, who also publishes a futuristic detective series under the pseudonym J.D. Robb. Other famous authors and their pseudonyms include Stephen King (as Richard Bachman) and Anne Rice (as A. N. Roquelaure and Anne Rampling).

Though J.K. Rowling’s possible publishing stunt is clever, it is also nothing new.