*** No. 1 (1 week)*** "Style" Taylor Swift Taylor Swift tallies her third Pop Songs No. 1 from 1989, and her fifth overall, as "Style" shoots 3-1. Prior single "Blank Space" reigned for six weeks and the set's lead single, "Shake It Off," led for two. She first topped the chart with "Love Story" (one week, 2009) and "I Knew You Were Trouble." (seven weeks, 2013).
1989 is the first album to yield three Pop Songs No. 1s since Katy Perry's Teenage Dream generated a record six in 2010-12.
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EDIT: As fridayteenage has pointed it, it was actually Maroon 5's Overexposed with Payphone, One More Night, and Daylight. Seems Billboard overlooked it.