"Hello" hits rarified air with 10 weeks at No. 1. Plus, "Stressed Out" continues its crossover from alternative.

It's a new year, but Adele holds the same coveted spot on the Billboard Hot 100 (dated Jan. 16), where "Hello" reigns for a 10th week. The ballad has spent all of its weeks at No. 1, after debuting atop the Nov. 14 chart.

Plus, twenty one pilots tally their first Hot 100 top 10, as "Stressed Out" bounds into the top tier.

As we do every Monday, let's take off on a flight through the Hot 100's top 10, and beyond. Highlights of the airplay/sales/streaming-based Hot 100 post on Billboard.com each Monday, with all charts updated each Tuesday.

With a 10th week atop the Hot 100, "Hello," the lead single from Adele's album 25 (released on XL/Columbia Records), becomes just the 31st No. 1 in the Hot 100's history to reign for double-digit weeks. Put another way: 1,048 No. 1s have crowned the Hot 100 since it launched in 1958, so "Hello" is in the top 3 percent of the longest-leading hits all-time. (Adele previously led for as many as seven frames with 2011's "Rolling in the Deep," her first of four No. 1s.)



"Hello" is the longest-leading Hot 100 No. 1 since Wiz Khalifa's "See You Again," featuring Charlie Puth, which ruled for 12 weeks last year. "Hello" logs the most weeks atop the Hot 100 by a solo female since Rihanna's "We Found Love," featuring Calvin Harris, which led for 10 weeks in 2011-12. (The overall record? Mariah Carey and Boyz II Men's "One Sweet Day" spent 16 weeks at No. 1 in 1995-96.)

Adele's '25' Scores Sixth Week at No. 1 on Billboard 200 Chart

"Hello" tallies a seventh week atop Digital Songs (passing "Deep" for her longest run atop the chart), gaining by 88 percent to 327,000 downloads sold in the week ending Dec. 31, according to Nielsen Music; sales of most songs rose in the tracking week, surely thanks to redemption of gift cards received for Christmas. The song has sold 3.7 million since its release. "Hello" also rules Radio Songs for an eighth week (extending Adele's longest command on the chart) with 172 million all-format audience impressions (up 9 percent). On Streaming Songs, it holds to No. 2 (after notching seven weeks at No. 1) with 19.8 million U.S. streams, down 6 percent.

It's also noteworthy that "Hello" has spent its first 10 weeks on the Hot 100 at No. 1. That's the fourth-longest stretch that a No. 1-debuting song has stayed at the summit. Here's a look at the singles to link the most consecutive weeks atop the Hot 100 from their starts at No. 1:

16 weeks, "One Sweet Day," Mariah Carey & Boyz II Men, 1995-96

14 weeks, "Candle in the Wind" / "Something About the Way You Look Tonight," Elton John, 1997-98

11 weeks, "I'll Be Missing You," Puff Daddy & Faith Evans feat. 112, 1997

10 weeks, "Hello," Adele, 2015-16

Meanwhile, second 25 single "When We Were Young" rises 54-47 on the Hot 100, led by its 45 percent increase to 56,000 sold and 35 percent boost to 38 million in radio audience.

Justin Bieber's 'Love Yourself' Is 2016's First No. 1 Single on U.K. Charts

Beneath "Hello" on the Hot 100, Justin Bieber's "Sorry" holds at its No. 2 peak after debuting at the rank (below "Hello") nine weeks ago. "Sorry" snares a third week at No. 1 on Streaming Songs (23.2 million, down 5 percent) and leads the subscription services-based On-Demand Songs chart for a seventh week (9.4 million on-demand streams, down 6 percent). It's steady at No. 2 on Radio Songs (137 million, essentially even from the week before) and rebounds 3-2 on Digital Songs (271,000, up 97 percent).

Bieber additionally ranks at No. 3 on the Hot 100 as "Love Yourself" stays at its highpoint. The song keeps at No. 3 on Streaming Songs (15.7 million, down 4 percent); backtracks 2-3 on Digital Songs, but with a 76 percent blast to 267,000; and roars 19-16 on Radio Songs (53 million, up 20 percent). Bieber places three songs in the Hot 100's top five for a fifth total week, as "What Do You Mean?" is a non-mover at No. 5 (after debuting as his first No. 1 on the Sept. 19 chart). All three singles are from his album Purpose, which bowed atop the Billboard 200 six weeks ago. As previously noted, only Bieber, 50 Cent (for two weeks in 2005) and the Beatles (eight weeks, 1964) have posted three simultaneous top five Hot 100 hits.

While the race for No. 1 on the Hot 100 was close again this week, "Hello" padded its lead slightly: the song is up by 23 percent in overall activity, while "Sorry" gains by 19 percent.

Also in the Hot 100's top five, Drake's "Hotline Bling" continues at No. 4 after reaching No. 2. It logs a 10th week at No. 1 on Billboard's Hot R&B/Hip-Hop Songs chart and rules Hot Rap Songs for a 15th week.

Shawn Mendes' "Stitches" lifts 8-6 on the Hot 100 after peaking at No. 4, spurred by its 171 percent vault to 140,000 sold. Mendes also rises 33-28, hitting a new peak, with follow-up "I Know What You Did Last Summer," with Fifth Harmony's Camila Cabello. Selena Gomez's "Same Old Love" drops a notch (6-7) from its best Hot 100 rank; and, Alessia Cara's debut hit "Here" likewise retreats a spot from its Hot 100 peak (7-8).

twenty one pilots touch down in the Hot 100's top 10 for the first time, as "Stressed Out" flies 13-9. The cut holds at No. 4 on Digital Songs, but with a 95 charge to 159,000 sold, and rises 14-12 on Radio Songs (59 million, up 8 percent) and 26-20 on Streaming Songs (7.1 million, up 9 percent), all highpoints (in ranks and sums). The hip-hop-influenced track tops Billboard's Hot Rock Songs chart for a second week, leads the Alternative Songs airplay chart for a ninth week and keeps crossing over to mainstream audiences, rising 14-13 on Pop Songs and bulleting at No. 20 on Adult Pop Songs.

Year in Music 2015: Twenty One Pilots on the Coolest Part of 'Blurryface' Going No. 1: 'Seeing People's Confused Reactions'

"Stressed Out" is from twenty one pilots' album Blurryface, which became the duo's first No. 1 upon its debut atop the Billboard 200 last June. The set soars 11-3 on the Jan. 16 chart and has sold 592,000 to date. "You can't underestimate the power of a core fan base and people who believe what you're doing," the act's Tyler Joseph told Billboard last year; Josh Dun completes the pair. "It doesn't matter what we post about ourselves on social networks or how many times we play live TV, even. It's all about those people, those fans who are telling other people about us. I think that's what we're seeing more than anything."

Rounding out the Hot 100's top 10, Meghan Trainor's "Like I'm Gonna Lose You," featuring John Legend, holds at No. 10 after reaching No. 8.

Among action outside the Hot 100's top 10, Post Malone's "White Iverson" jumps 24-15; Demi Lovato's "Confident" climbs 27-23; and, two songs reach the top 40: Daya scores her first top 40 Hot 100 hit with "Hide Away" (42-31), and Charlie Puth tallies his third with "One Call Away" (57-36).

Find out more noteworthy news throughout the chart in the weekly "Hot 100 Chart Moves" column to post later this week. And, visit Billboard.com tomorrow (Jan. 5), when all rankings, including the Hot 100 in its entirety, will refresh, as they do each Tuesday. The Hot 100 and other charts will also appear in the next issue of Billboard magazine, on sale Friday (Jan. 8).