Two weeks after debuting at No.5, Post Malone's Rockstar jumps 2-1 to become the 22-year-old rapper's first chart-topper. Also featuring fellow hip-hop talent 21 Savage, the track has rapidly surpassed everything either of the duo has done before, and has already topped the chart over much of Europe and in New Zealand, though it remains at No.2 in the pair's home country, the USA.

Rockstar's sales of 46,922 copies in the latest frame include 37,940 from streams. It is, by ...