Arthur's "Say You Won't Let Go" jumps 50-37 & Adele's "Water Under the Bridge" lifts 44-38. Plus, Zayn & Taylor Swift zoom.

As previously reported, Migos' "Bad and Boujee," featuring Lil Uzi Vert, rises 2-1 to crown the Billboard Hot 100 (dated Jan. 21), boosted by viral online buzz playing off the song's lyrics. Lil Uzi Vert concurrently notches his second top 40 Hot 100 hit, as "You Was Right" rises 42-40 in its 26th week on the chart.

Who else makes noteworthy moves on the Hot 100?

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Migos' 'Bad and Boujee,' Featuring Lil Uzi Vert, Tops Hot 100.

Zayn / Taylor Swift, "I Don't Wanna Live Forever (Fifty Shades Darker)"
After debuting at No. 6 three weeks earlier (on the Dec. 31-dated Hot 100), the collab reaches its highest rank since, vaulting 22-14. Sparked by interest in the Jan. 2 arrival of the Fifty Shades Darker extended trailer, the track roars 22-5 on the Digital Song Sales chart, up by 20 percent to 63,000 downloads sold in the week ending Jan. 5, according to Nielsen Music (also good for the Hot 100's top Digital Gainer sales award).

Additionally, "Forever" flies 20-16 on Radio Songs (58 million in airplay audience, up 18 percent) and 30-19 on Streaming Songs (8.5 million U.S. streams, up 14 percent).

James Arthur, "Say You Won't Let Go"
The U.K. singer-songwriter reaches the Hot 100's top 40 in his first visit to the chart, as his breakthrough ballad rises 50-37. It re-enters Digital Song Sales at No. 24 (29,000 sold, up 13 percent) and Streaming Songs at No. 31 (6.9 million, up 18 percent) following his stops on CBS' The Late Late Show With James Corden (Jan. 3), marking Arthur's first U.S. TV performance, and NBC's Today (Jan. 5).

Radio is also discovering the intimate track, as it bullets at No. 28 on Adult Pop Songs (up 18 percent in plays).

Adele, "Water Under the Bridge"
"Water" likewise flows into the Hot 100's top 40, rising 44-38. The fourth single from 25 follows lead smash "Hello" (10 weeks at No. 1), "When We Were Young" (No. 14) and "(Send My Love) To Your New Lover" (No. 8). Adele adds her 10th top 40 Hot 100 hit, dating to her first, "Chasing Pavements" (No. 21, 2009).

"Water" bullets at No. 18 on Radio Songs with an 8 percent gain to 55 million in audience.

In its 59th week on the Billboard 200, 25 ranks at No. 20 with 20,000 equivalent album units. It has sold 9.2 million copies in the U.S. to date.....