Demi Lovato's 'Cool for the Summer' Is Fastest No. 1 on Dance Club Songs in Two Years

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Demi Lovato performs outdoors for "Jimmy Kimmel Live" on Aug. 31, 2015 in Los Angeles, California.

Demi Lovato leaps to the top of Billboard's Dance Club Songs chart (dated Sept. 12), as "Cool for the Summer" blasts 5-1. The track reaches the summit in only its fifth week, completing the quickest climb to No. 1 in nearly two years: Lady Gaga's "Applause" last needed just five frames to reign in October 2013.

"Summer" sports a bevy of dance remixes, including those from Dave Aude, Jump Smokers and Todd Terry.

Lovato has now taken all four of her Dance Club Songs entries to No. 1, beginning two years ago with "Heart Attack." Last year, she led with "Neon Lights" and "Really Don't Care."

(Just ahead of Labor Day, "Cool for the Summer" is one of two songs in the Dance Club Songs top 10 sporting the word summer in their titles: Afrojack's "SummerThing!," featuring Mike Taylor, cruises 11-6.)

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Lovato, who performed her latest hit with assistance from Iggy Azalea on Sunday's (Aug. 30) MTV Video Music Awards, also enjoys a top 20 placement with the single on the Billboard Hot 100 (No. 17, after reaching No. 16). On the Nielsen Music-based Pop Songs airplay chart, "Summer" ascends to the top five (7-5).