416：Max Martin, #1 hitmaker

Before today, I didn't know who is Max Martin. But now I am astonished to find that I have listened a lot of songs written by him, which I even can hum with melodies. Martin produced and co-wrote the Billboard Hot 100 number 1 hit "We are never ever getting back together", on Taylor Swift's fourth album Red, which became her first number-one single in the US. What I missed!