The Amity Affliction and Young the Giant Debut on Top Rock Albums

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The Amity Affliction attend the Kerrang! Awards at the Troxy on June 9, 2016 in London.

The bands' new sets start at Nos. 4 and 3, respectively, with The Amity Affliction nabbing its first No. 1 on Hard Rock Albums.

The Amity Affliction and Young the Giant boast the most sizable debuts on Billboard's rock albums charts (dated Sept. 3), with the former topping Hard Rock Albums for the first time.

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Young the Giant returns to Top Rock Albums and Alternative Albums, debuting on both at No. 3 with Home of the Strange, which sold 20,000 in its first week, according to Nielsen Music. The California quintet's previous set, 2014's Mind Over Matter, bowed at No. 2 on both charts (with 34,000). The new album's lead single, "Something to Believe In," has reached No. 9 on Alternative Songs, No. 14 on Rock Airplay and No. 24 on the airplay/sales/streaming-driven Hot Rock Songs chart.

This Could Be Heartbreak, the fifth studio album Australian metalcore act The Amity Affliction, debuts at No. 4 on Top Rock Albums and No. 1 on Hard Rock Albums with 13,000 sold. On the latter tally, the launch bests the debut and peak of the band's first entry, 2014's No. 3 hit Let the Ocean Take Me. The new album also represents the group's best sales week; Ocean crested with 10,000 in its first week.

With its No. 4 entrance on Top Rock Albums, Heartbreak exceeds the No. 11 start and peak of Ocean. The new LP arrives at No. 26 on the Billboard 200, where Ocean reached No. 31.

The Top Rock Albums chart's other top 10 debut belongs to Blind Pilot, as And Then Like Lions, the Portland, Oregon, folk-rock act's third studio album and first since 2011's We Are the Tide, starts at No. 7 (7,000 sold). It also enters Americana/Folk Albums at No. 2 and Alternative Albums at No. 7. The ranks mark new bests for the band on Top Rock Albums and Alternative Albums; on Americana/Folk Albums, the act ties the No. 2 high of Tide.