Scott scores his second leader and first to start at the summit.

Travis Scott blasts in atop the Billboard Hot 100 as "Highest in the Room," true to its title, launches at No. 1. The rapper earns his second leader and first to debut in the top spot.

Plus, Dan + Shay and Justin Bieber's "10,000 Hours" soars onto the Hot 100 at No. 4.

Let's run down the top 10 of the Hot 100 (dated Oct. 19), which blends all-genre U.S. streaming, radio airplay and sales data. All charts will update on Billboard.com tomorrow (Oct. 15).

"Highest," released on Cactus Jack/Grand Hustle/Epic Records on Oct. 4 (after it was initially teased in a Kylie Jenner Kybrow cosmetics ad in April), and the 1,090th leader in the Hot 100's 61-year history, starts at No. 1 the Streaming Songs chart with 59 million U.S. streams in the week ending Oct. 10, according to Nielsen Music.

The song's first-week streaming sum marks the best premiere since Ariana Grande's "7 Rings" burst in earlier this year with 85.3 million (Feb. 2). Among solo males, "Highest" claims the strongest such start since Childish Gambino's "This Is America" began with 65.3 million (May 19, 2018).

Available digitally and, in its first week, in a variety of physical formats (CD, cassette and vinyl; consumers also received a digital version when ordering the physical copies), the track bows at No. 2 on Digital Song Sales with 51,000 sold in the week ending Oct. 10. It ranks below the Radio Songs survey with 6.9 million audience impressions in the week ending Oct. 13.

The song is, as of now, a stand-alone single. "I'm taking my time to come up with the next album," Scott said on Oct. 3. "I'm always down to drop music and serve some packs to the fans. It's time for the fans to eat."

Scott's second No. 1: Scott adds his second Hot 100 No. 1, after "Sicko Mode" led the Dec. 8, 2018-dated chart. That track debuted at No. 4 and remained in the top 10 continuously before leading at last in its 17th week.

35th No. 1 debut all-time: "Highest" is the 35th single to start atop the Hot 100 and the first since Jonas Brothers' "Sucker" in March. Three songs have debuted at No. 1 in 2019, as Grande's "7 Rings" first did so in February.

Epic enjoys its third overall No. 1 arrival, after DJ Khaled's "I'm the One," featuring Bieber, Quavo, Chance the Rapper and Lil Wayne (released on both Def Jam and Epic), in 2017 and Michael Jackson's "You Are Not Alone," the first song to debut at No. 1, in 1995.

R&B/Hip-Hop & Rap ruler: "Highest" also debuts atop both the Hot R&B/Hip-Hop Songs and Hot Rap Songs genre charts (which employ the same multi-metric methodology as the Hot 100). Scott earns his third leader on each list, after "Sicko Mode" (10 weeks at No. 1 on each chart, beginning last November), which dethroned Kodak Black's "Zeze," featuring Scott and Offset, after a week at No. 1.

'Highest' love: Scott notches the fifth Hot 100 No. 1 with a form of the word "high" in its title, and now songs with "high," "higher" and "highest" have all taken the top spot. It follows: "Ain't No Mountain High Enough," by Diana Ross (three weeks at No. 1, 1970); "The Tide Is High," by Blondie (one week, 1981); "Higher Love," by Steve Winwood (one, 1986); and "You're Makin' Me High"/"Let It Flow," by Toni Braxton (one, 1996).

'Room' at the top: Meanwhile, the word "room" inhabits the Hot 100's penthouse for the first time. It bests the prior such highest-charting hit: Brandy's "Sittin' Up in My Room," which rose to No. 2 in 1996.

Lizzo's "Truth Hurts" drops to No. 2 on the Hot 100 after six weeks at No. 1. Still, it rules Radio Songs for a fourth frame (120.4 million, down 1%). It descends to No. 3 on Digital Song Sales (28,000, down 8%), after five weeks at No. 1, and 6-12 on Streaming Songs (25.8 million, down 7%).

Shawn Mendes and Camila Cabello's "Señorita" slips 2-3 on the Hot 100, after commanding the Aug. 31-dated chart.

Dan + Shay and Justin Bieber's "10,000 Hours" roars onto the Hot 100 at No. 4, as it opens atop Digital Song Sales at No. 1 with 53,000 sold in the week ending Oct. 10, following its Oct. 4 premiere. Dan + Shay notch their first No. 1 on the sales chart, while Bieber banks his 10th, tying Drake and Eminem for the most among males. Among all acts, Taylor Swift leads with 18 Digital Song Sales No. 1s, followed by Rihanna (14) and Katy Perry (11).

"Hours" also enters Streaming Songs at No. 3 with 33.3 million U.S. streams, while nearing Radio Songs with 19.6 million in all-format audience. Being promoted to country and pop radio, the track ranks at No. 25 in its second week on the Country Airplay chart, while debuting at No. 26 on Adult Pop Songs and No. 29 on Pop Songs.

Dan + Shay post their highest Hot 100 rank, after the pair reached a previous No. 21 high with "Tequila" in July 2018. Notably, "Hours" is the first song by a duo or group that primarily records country music ever to debut in the Hot 100's top five.

Bieber adds his 16th Hot 100 top 10 and first since "I Don't Care" (with Ed Sheeran), which debuted and peaked at No. 2 in May.

"Hours" concurrently blasts from 40-1 on the multi-metric Hot Country Songs chart, where Dan + Shay add their third No. 1 and Bieber earns his first. Along with five No. 1s on the Hot 100, Bieber also now boasts leaders on six other charts that are based on the same methodology: Hot Country Songs, Hot Dance/Electronic Songs, Hot Latin Songs, Hot R&B/Hip-Hop Songs, Hot Rap Songs and Hot R&B Songs, making him the only act to have topped all seven tallies.

(Dan + Shay are co-managed by Jason Owen and Bieber's manager, Scooter Braun. Shay and Myers attended the wedding celebration for Bieber and wife Hailey Baldwin on Sept. 30.)

Lewis Capaldi's "Someone You Loved" dips to No. 5 on the Hot 100 from its No. 3 high; Post Malone's "Circles" rises 8-6, after reaching No. 4; and Chris Brown's "No Guidance," featuring Drake, falls to No. 7 from its No. 5 peak, while leading Hot R&B Songs for a seventh week.

Rounding out the Hot 100's top 10, Lil Tecca's "Ran$om" tumbles to No. 8 from its No. 4 peak; Billie Eilish's "Bad Guy," which ruled the Aug. 24 Hot 100, drops 6-9; and Lil Nas X's "Panini" backtracks 8-10 after hitting No. 5.

Find out more Hot 100 news on Billboard.com this week, and, for all chart news, you can listen (and subscribe) to Billboard's Chart Beat Podcast and Pop Shop Podcast and follow @billboard and @billboardcharts on both Twitter and Instagram. And again, be sure to visit Billboard.com tomorrow (Oct. 15), when all charts, including the Hot 100 in its entirety, will refresh.