Max Martin, Pope of Pop by BringMoreLegos

Question 14

In 1999, the Backstreet Boys' Millennium (heavily featuring Martin's work) set a record for the highest first-week sales of any album. Since then, it has been surpassed by 50 Cent's The Massacre, Taylor Swift's Red and 1989, Britney Spears's Oops... I Did It Again, Backstreet's Black and Blue, Eminem's The Marshall Mathers LP, *NSync's Celebrity and No Strings Attached, and Adele's 25. On HOW MANY of these top ten fastest-selling albums (including Millennium) did Martin work his magic?