Hot 100 Chart Moves: Lady Gaga's 'Til It Happens to You' Debuts

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Lady Gaga performs onstage the 88th Annual Academy Awards at Dolby Theatre on Feb. 28, 2016 in Hollywood, California.

Her Oscar-nominated song debuts following her performance on Hollywood's biggest night. Plus, moves for Mike Posner, Zara Larsson, MNEK, Zayn, Flo Rida & Jason Derulo.

As previously reported, Rihanna's "Work," featuring Drake, logs a third week at No. 1 on the Billboard Hot 100 (dated March 19), while Kelly Clarkson rockets in at No. 8 with "Piece by Piece" and Lukas Graham enters the top 10 at No. 9 with "7 Years." Plus, Fifth Harmony's "Work From Home" debuts at No. 12, matching the girl group's best Hot 100 rank.

Rihanna Tops Hot 100 for Third Week, Kelly Clarkson Debuts in Top 10

Who else makes themselves at home on the Hot 100 this week?

Mike Posner, "I Took a Pill in Ibiza"
The pop singer-songwriter's comeback single continues climbing toward the Hot 100's top 10, lifting 15-14. Posner scored his lone top 10, the No. 6-peaking "Cooler Than Me," in 2010. Powered by its SeeB remix, released in December (after the song first arrived in its original form on Posner's EP The Truth in June), "Ibiza" gains by 16 percent to 59,000 downloads sold in the week ending March 3, according to Nielsen Music, although it retreats a spot on the Digital Songs chart (9-10). It zooms 21-14 on Streaming Songs (9.2 million U.S. streams, up 14 percent) and 28-18 on Radio Songs (50 million in airplay audience, up 19 percent).

Zara Larsson & MNEK, "Never Forget You"
Swedish singer Larsson and British crooner MNEK each earn their first top 40 Hot 100 hit, as the dance-pop song surges 58-34. It charges onto Digital Songs at No. 20 (35,000, up 101 percent) and enters Streaming Songs at No. 49 (4.8 million up 26 percent), while nearing Radio Songs (26 million, up 33 percent).

Zayn, "It's You"
From Zara to Zayn: the former One Directioner bullets at No. 6 on the Hot 100 with "Pillowtalk," which blasted onto the chart at No. 1 four weeks ago. As that official first single from his debut album, Mind of Mine, due March 25 (the one-year anniversary of his departure from 1D) keeps gaining in airplay, jumping 24-15 on Radio Songs (53 million, up 15 percent), a second song from the set arrives, as "It's You" hits the Hot 100 at No. 59. It bows at No. 19 on Digital Songs (36,000 in its first week) and drew 3.4 million streams.

On Billboard + Twitter Top Tracks, Zayn collects a second straight No. 1, where "You" strides 5-1. "Pillowtalk" led the list for two frames last month.

Flo Rida, "Hello Friday," feat. Jason Derulo
The collab (no, it's not a mash-up of Adele and Rebecca Black's hits) enters the Hot 100 at No. 79. The stand-alone single debuts with 34,000 sold in its first week and begins on Digital Songs at No. 21. In the Hot 100's top 10, Flo Rida hits a new high with current smash "My House" (5-4).

Lady Gaga, "Til It Happens to You"
Following Gaga's performance of the Academy Award-nominated song on the Feb. 28 Oscars broadcast, coupled with new promotion, the song debuts at No. 95 on the Hot 100. It's her 22nd entry on the chart dating to her 2008 debut with "Just Dance" (featuring Colby O'Donis). Sales are the greatest driver of the song, which enters Digital Songs at No. 27 with 28,000 (up 2,121 percent from 1,000 in the prior tracking week). That sum accounts for 39 percent of its 71,000 sold to date, since its September release. "Til" also earned 1 million streams (up 546 percent) in the tracking week.

Ask Billboard: Diane Warren's Biggest Hot 100 Hits

Gaga co-wrote her latest Hot 100 hit with Diane Warren, who returns to the list for the first time since 2011. She has earned 32 top 10 hits on the Hot 100, including nine No. 1s.

Additional reporting by Keith Caulfield