Its sales total was unspectacular, but its chart ranking is as good as it gets. Sia's "1000 Forms of Fear" debuts at #1 on Billboard's album sales chart.

It did not debut with a monster total, but Sia’s new “1000 Forms of Fear” still garnered enough commercial interest to reign as the week’s top-selling album.

According to Billboard, the singer-songwriter’s album debuts atop the Billboard 200 chart with first week sales of 52,000. Both the chart ranking and sales count are the best of Sia’s career.

The total, nonetheless, represents the worst for a weekly number one since Zac Brown’s “Uncaged” led with 48,000 the week of August 11, 2012.

Benefiting from a variety of e-tail discounts, the “Frozen” soundtrack enjoyed a boosted weekly total of 46,000. Thanks to that tally, which marks a 23% weekly increase, “Frozen” improves to #2 on the Billboard 200.

Sam Smith’s “In the Lonely Hour” follows at #3 with 42,000, while Ed Sheeran’s “x” (35,000) and Trey Songz’ “Trigga” (34,000) complete the top five.

Other top ten albums: Judas Priest’s “Redeemer of Souls” (33,000, #6), NOW 50 (22,000, #7), Dirty Heads’ “Sound of Change” (21,000, #8), Miranda Lambert’s “Platinum” (20,000, #9), Lana Del Rey’s “Ultraviolence” (18,000, #10).