Next Disturbed pack based on highest charted songs:
Land Of Confusion*
*The only #1 single we don't have by Disturbed. I'd imagine since it's a cover, there would be added licensing difficulties. If not, next in line would be "Warrior", "Liberate", or "Just Stop" which have all peaked at #4. Probably would be "Warrior" since it's their most recent single if I had to take a guess.