In 2013, David Bowie decided to celebrate his 66th birthday in a big way and surprised his fans with a gift of his own at the same time. He announced that he was releasing his first album in a decade. Bowie was secretly recording songs for “The Next Day” and had been locked away in the studio on and off for two years. His camp even required people in the know to sign non-disclosure agreements to keep everything a secret and it worked. Bowie, who had convinced his fans he had retired from the industry, earned his first number one album in the U.K. in 20 years.