Katy Perry crashes the Hot 100's top 10 with "Dark Horse," featuring Juicy J (11-6), the third single from her former Billboard 200 No. 1 album "PRISM." Lead track "Roar" spent two weeks at No. 1, while follow-up "Unconditionally" reached No. 14 (and this week slides 20-29). "Horse," which marks Perry's lucky 13th Hot 100 top 10, trots to the top 10 as the Hot 100's top Airplay Gainer, bounding 28-18 on Radio Songs (52 million, up 28%). It jumps 7-4 on Digital Songs (229,000, down 20%), returning to its peak position logged upon its Oct. 5, 2013, debut as a "PRISM" preview track. "Horse" hits the Streaming Songs top 10 (14-10), swelling by 26% to 3.6 million.