Swift's 'Blank Space' reigns for a fourth week, while Trainor's 'Lips Are Movin' leaps 13-8 … after the pair teamed up to break a record first set by the Beatles.

Taylor Swift's "Blank Space" leads the Billboard Hot 100 for a fourth week, while Meghan Trainor tallies her second top 10, as "Lips Are Movin" surges 13-8. The two stars' latest Hot 100 action follows their having bested a record first established by the Beatles 50 years ago.

It's Wednesday, the day that the sales/airplay/streaming-based Hot 100 is compiled each week, so let's run down all the spaces in the chart's top 10 and more.

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With "Space," released on Big Machine Records and promoted to radio by Republic Records, at No. 1 for a fourth frame, Swift ties her longest Hot 100 reign. Her prior single, and second No. 1, "Shake It Off," spent four weeks on top (the first two in September, then two in November; in between it held at No. 2 for eight weeks while Trainor's breakthrough "All About That Bass" led). Swift's first leader, "We Are Never Ever Getting Back Together," ruled for three weeks in 2012.

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"Space" stays at No. 1 on the Hot 100 fueled by its fifth nonconsecutive week atop the Digital Songs chart with 254,000 downloads sold (down 26 percent) in the week ending Dec. 7, according to Nielsen Music. She matches her longest command on Digital Songs, as well, first set by "Never."

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"Space" paces Streaming Songs for a fourth week, with 12 million U.S. streams (down 15 percent). On Radio Songs, it rises 3-2 with a 17 percent increase to 131 all-format impressions, securing the Hot 100's top Airplay Gainer award for a fifth straight week (tying the best streak this year; "Bass" snared the honor for five weeks in a row in August/September).

Oh, look, a major "Shake"-up! For the first time in three months, an artist other than Swift or Trainor inhabits the Hot 100's top two spots, as Hozier's "Take Me to Church" rises 3-2. The Irish singer/songwriter's debut hit tops the subscription services-based On-Demand Songs chart for a fifth week (4.5 million, up 19 percent); rises 4-3 on Digital Songs (157,000, down 1 percent); bounds 9-5 on Streaming Songs (8.3 million, up 17 percent); and reaches the Radio Songs top 10 (13-10; 70 million, up 16 percent).

"Church" concurrently leads the Hot Rock Songs chart for an eighth week.

Thus, 14 weeks of Swift's "Shake" and "Space" and Trainor's "Bass" locking up the Hot 100's top two, in various combinations, ends … but not before setting a record. In the Hot 100's 56-year history, no two acts had teamed up for a longer streak of monopolizing the top two positions. Swift and Trainor beat the Beatles and Lesley Gore, who blocked all other competitors from the region for 13 weeks a little more than 50 years ago. Most of that run was courtesy of the Fab Four: the week that their iconic "I Want to Hold Your Hand" hit No. 1, on Feb. 1, 1964, Gore's "You Don't Own Me" began its three-week peak at No. 2. For the 10 weeks after that, it was all-Beatles, thanks to "Hand," "She Loves You," "Can't Buy Me Love" and "Twist and Shout."

(The Beatles' control of the top two lasted through April 25, 1964. The following week (May 2), "Can't" held at No. 1, but Louis Armstrong and His All-Stars' classic "Hello, Dolly!" ascended 4-2.)

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Swift and Trainor's stranglehold on the Hot 100's top two wraps as "Bass" descends 2-3. Trainor is on the rise again, however, as follow-up "Lips Are Movin" vaults 13-8. The similarly doo-wop/pop-styled cut soars to the Digital Songs top five (8-5; 110,000, up 2 percent) and the Streaming Songs top 10 (13-7; 7.8 million, up 20 percent). On Radio Songs, "Lips" lifts 44-36 (36 million, up 26 percent).

Maroon 5's "Animals" rebounds 5-4 on the Hot 100 after rising to No. 3 four weeks ago. "Animals" tops Radio Songs for a fourth week (132 million, down 3 percent).

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Rounding out the Hot 100's top five, Mark Ronson's "Uptown Funk!," featuring Bruno Mars, charges 8-5. The retro-soul collab dips 3-4 on Digital Songs (152,000, down 9 percent) but jumps 27-22 on Streaming Songs (5.2 million, up 18 percent) and 46-31 on Radio Songs (37 million, up 34 percent).

With the move, Mars scores his 11th top five Hot 100 hit. Dating to his first week in the tier (March 27, 2010, as featured on B.o.B's "Nothin' on You"), he passes Katy Perry and Rihanna (10 each) for the most top five titles in that span.

Swift's "Shake " dips 4-6 on the Hot 100, followed by Sam Smith's "I'm Not the Only One," which holds at its No. 7 highpoint. Below Trainor's new top 10 at No. 8, Nick Jonas' No. 8-peaking "Jealous" returns to the bracket (11-9) and Ariana Grande & The Weeknd's "Love Me Harder" stays at No. 10 after reaching No. 7.

Visit Billboard.com Thursday, Dec. 11, when all rankings, including the Hot 100 in its entirety and Digital Songs, Radio Songs and Streaming Songs, will refresh, as they do each Thursday. The latest charts will also appear in the next issue of Billboard magazine, our annual Year in Music special, featuring a bounty of year-end charts and exclusive editorial analysis, interviews, photo galleries and more, on sale on Friday, Dec. 12.