Demi Lovato. (Instagram Photo via @ddlovato)

Amazon employees in Seattle worn out by the grind of this year’s Prime Day will be able to recharge with a concert at CenturyLink Field featuring pop star Demi Lovato, GeekWire has learned.

The “Sorry Not Sorry” singer will headline the Post-Prime Day Celebration Concert on July 19, three days after Amazon’s big 36-hour sales event kicks off at noon PT on the 16th. St. Vincent and Kamasi Washington are also on the bill. Lovato is currently on her “Tell Me You Love Me” world tour.

Amazon declined to comment Tuesday on specifics of the concert lineup. But an invite to employees and recent tweets confirmed the news.

On the other side of the country, another pop star will help Amazon celebrate, starting on Wednesday. Ariana Grande is the headliner for an Unboxing Prime Day concert from Amazon Music in New York City. The concert will stream globally on Amazon.com beginning at 8 p.m. ET. Julia Michaels, Alessia Cara and Kelsea Ballerini will also perform.

Events are also planned in Los Angeles, London, Tokyo and Milan in celebration of Amazon’s fourth Prime Day. The mid-summer shopping extravaganza has eclipsed Black Friday and Cyber Monday as Amazon’s busiest shopping day.

Amazon’s shift to the Prime concert event in Seattle comes after years of throwing a post-holiday party and summer picnic. As the company’s workforce has grown to as many as 45,000 employees in Seattle, Amazon said it saw the need to “evolve” its events.

Seattle hip-hop stars Macklemore and Ryan Lewis performed at the 2015 employee summer concert to mark Amazon’s 20th anniversary. The post-holiday concert in 2017 featuring the band DNCE attracted around 25,000 people. And New Zealand singer Lorde performed at the post-holiday party this past January, with 40,000 in attendance.

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