6. Lana Del Rey - 'Ultraviolence'
After the huge response to her 2012 Born To Die, Lana Del Rey could have easily teamed up with the likes of Max Martin or Dr. Luke to craft an album destined to play all year on Top 40 radio. Instead, she headed down to Nashville and cut Ultraviolence with Black Keys frontman Dan Auerbach. "Dan was really a stranger to me," she recently said. "I didn't know anything about him, but he was really casual and spontaneous. So even though going off to Nashville doesn't sound like a really exotic thing to do, for me it felt adventurous. I guess I didn't know what we were going to get." The gambit worked, and Ultraviolence debuted at Number One on the Hot 100.