Rihanna's "Bitch Better Have My Money" surprised nobody by becoming Shazam's biggest U.S. mover this week, while Iggy Azalea's jailhouse duet with JHud also made huge strides.

But why was a Nine Inch Nails track the second-biggest jumper, flying 169 spots? "Somewhat Damaged" led off an episode of The Walking Dead, and that's all it takes nowadays. Meanwhile, the new Muse single makes a strong impression as it takes hold at Alternative radio. Other big movers include Epic's Jidenna and Capitol Nashville's Little Big Town (who seem to be weathering the semi-controversy surrounding "Girl Crush" just fine). Check out the entire Top 100 chart, sortable by rank, artists and greatest gainers, here.

On the U.K. side, Rihanna and NIN are also the top two movers, with Catfish and the Bottlemen and Martin Garrix also clocking big gains.

Now when will they finally roll out a Shazam that can identify the character actors on Law and Order?