Another week, another stint as the top-selling single on Billboard’s Digital Songs chart.

Ariana Grande’s “Problem,” which moved a dominant 438,000 copies in its inaugural week, scores another 235,000 paid downloads this week. The track, which remains hot on iTunes and is rapidly gaining traction at radio, already warrants classification as a hit.

For the second week in a row, Iggy Azalea finds herself on both of the top two digital singles. Featured on Grande’s “Problem,” the rapper is the lead artist on “Fancy (featuring Charli XCX),” which ranks second on the strength of 216,000 purchases.

Pharrell’s blockbuster “Happy” follows with 156,000, while John Legend’s “All of Me” adds 144,000 downloads to its take. DJ Snake & Lil Jon’s “Turn Down for What” closes the top five with 130,000 weekly sales.

Others in the top ten include Michael Jackson & Justin Timberlake’s “Love Never Felt So Good” (101,000, #6), Jason DeRulo’s “Wiggle (featuring Snoop Dogg)” (94,000, #7), Nico and Vinz’ “Am I Wrong” (93,000, #8), Coldplay’s “A Sky Full of Stars” (87,000, #9) and Jason DeRulo’s “Talk Dirty (featuring 2 Chainz)” (83,000, #10).

The Jackson/Timberlake and Nico & Vinz tunes are making their debuts in the top ten of Billboard’s Digital Songs chart.