NEW YORK (NYT) - Five years ago, a teenager in New Zealand was uploading her songs to SoundCloud in obscurity. Before long, with the stage name Lorde, she became a Grammy-winning pop star and now, at 20, has her first No. 1 on the Billboard album chart.

Melodrama, her second album, squeezed ahead of rapper 2 Chainz in a close race for the top. Melodrama had the equivalent of 109,000 US sales in its first week out, including 82,000 copies sold as a full album and 35 million song streams, according to Nielsen.

2 Chainz's Pretty Girls Like Trap Music had the equivalent of 106,000 sales, including twice as many streams as Melodrama.

Kendrick Lamar's Damn. fell to third place in its 10th week out.

Two other new albums rounded out the Top 5 - The Nashville Sound by Jason Isbell And The 400 Unit is at No. 4 while Nickelback's Feed The Machine is at No. 5.

Katy Perry's Witness, which opened at No. 1 last week, dropped to No. 13.