Hilary Duff 'Sparks' New High on Social 50 Chart

Hilary Duff returns to the Social 50 chart after the singer/actress announced her new single “Sparks” and forthcoming album on March 30. The pop star comes in at No. 25 on the chart dated April 18 -- a new peak.

The Social 50 ranks the most popular artists on YouTube, Vevo, Facebook, Twitter, SoundCloud, Wikipedia, MySpace and Instagram. The chart's methodology blends weekly additions of friends/fans/followers along with artist page views, song plays and reactions as measured by music analytics company Next Big Sound.

Watch Hilary Duff's 'Younger' TV Show Preview With New Song 'Sparks'

Duff appeared on both ABC’s Good Morning America as well as The Ellen DeGeneres Show on March 30, speaking about her upcoming new music and TV Land show Younger. The appearances, which were promoted heavily across Duff’s social channels, led to a 33 percent gain in Facebook fans in the week ending April 5, according to Next Big Sound. She also earned a 164 percent increase in new Instagram followers and a 41 percent spike in views to her Wikipedia page.

“Sparks” debuted on iTunes and YouTube on April 6. Higher up the tally, Ludacris collects the chart’s biggest percentage gain, as he zooms 124 percent in points and rises 47-17 (his highest rank since Nov. 15, 2014, when he was also No. 17). The rally comes after a busy week of promotion around the April 3 release of his film Furious 7 and the March 31 bow of his album Ludaversal. His Twitter mentions grew by 36 percent for the week, and his Instagram likes jumped by 77 percent.

Finally, Selena debuts at No. 49 following publicity around the 20th anniversary of her death on March 31. The re-entry is due mostly to an increase in visits to her Wikipedia page, which was up 359 percent after more than 173,000 views.

Watch Kendrick Lamar's 'King Kunta' Video

Over on the weekly Billboard + Twitter Top Tracks chart, Kendrick Lamar is the top entry after the April 1 release of the music video for “King Kunta,” the third single from Lamar’s Billboard 200-topping album To Pimp a Butterfly. The resulting conversation causes the track to re-enter the chart at No. 2, which ties the peak of Lamar’s prior single, “The Blacker the Berry,” which arrived in the runner-up slot on the chart dated Feb 28. His set’s first single “I” topped the Billboard + Twitter Top Tracks chart dated Oct. 11.

As predicted, Zayn Malik makes his first solo appearance on a weekly chart with “I Don’t Mind” (No. 5 debut on Top Tracks), a demo of a song produced by Naughty Boy which he shared March 30 on Twitter. After Naughty Boy tweeted the song -- which succeeded in riling fans up -- a beef between the producer and One Direction's Louis Tomlinson escalated, helping the track gain further traction online.

Lastly, the debut of the official music video for “Big Girls Cry” grants Sia her sixth Top Tracks entry, as the song starts at No. 7. The video, which yet again features dancing youngster Maddie Ziegler, helps the camera-shy singer score her fifth top 10, with “Elastic Heart” her sole No. 1 to date (Jan. 24, 2015, chart).