This week in the magazine, Sasha Frere-Jones reviews the latest album from Britney Spears. Frere-Jones has written about many of the big pop releases this year, including music by Justin Timberlake, Eminem, Katy Perry, and Lorde. But he's also written about lesser-known acts like King Krule and the artists on the Tri Angle record label. Here, Frere-Jones talks with Sasha Weiss about his favorite music of 2013, why he thinks Kanye West's "Yeezus" is the album of the year, and how a new group of young musicians is pushing music forward.