Book Bonus Beat: The Number Ones: Twenty Chart-Topping Hits That Reveal the History of Pop Music. In the six years after 25, the kajillion-selling 2015 album that had "Hello" on it, Adele didn't release any music. "Easy On Me" is an Adele song in the good ways and the bad ways. After so many long breaks between albums, the whole idea of "another Adele song" doesn't hit quite as hard. The Number Ones: Twenty Chart-Topping Hits That Reveal The History Of Pop Music is out now via Hachette Books.