*Imagine Dragons retains first this week with the Kendrick Lamar-assisted "Radioactive (Remix)." Juicy J's "Talkin' Bout" graduates from our Rap Chart to claim second, knocking T-Pain's "F**k 'Em" to third.
*Graduating from our Rap Chart along with Juicy J.'s latest, Big Sean's "Ashley," Future's "Move That Dope" and 2 Chainz's "Ima Dog" claim sixth, 10th and 19th.
*Up from our R&B/Pop Chart, Jay Sean's "Take That Off" and Raleigh Ritchie's "Stronger Than Ever" come in 17th and 20th.
*Tyga's "Wake Up In It" makes the jump from our Club Hip-Hop Chart, snagging 14th.
*Katy Perry's "Dark Horse (Remix)," Timbaland's "Know Bout Me" and ScHoolboy Q's "Break the Bank" narrowly miss appearing on the chart. Your feedback and ratings will determine whether they make the cut next week!