Atlanta's ONE Music Fest is celebrating it's five-year anniversary this year and have tapped hip-hop heavyweights Nas and Kendrick Lamar for headlining performances.

The one-day event takes place on Saturday, September 13 at Aaron's Amphitheater at Lakewood.

Also featured on the linup are Jhené Aiko, Method Man & Redman, Bilal, Daley, Amel Larrieux, Isaiah Rashad, Alice Smith, Cody Chesnutt, Lakim, Andre Power, and The Whooligan.

Event organizers are expecting 15,000 attendees this year. They have also launched an app, which is available for free download to festival-goers.

"The app comes with a music playlist, ticket buying ability, an artist photo booth, which allows you to take photos with some of your favorite artists, festival line up, sponsor's page and more," their statement reads.

Organizers promise in addition to seeing Lamar, Nas, Aiko and more that "patrons will also get the opportunity to immerse themselves in visual arts, food, games, and interactive activities."

Last year's lineup included Snoop Dogg, Goodie Mob, Ceelo Green, Joey Bada$, Luke James, and more.

Tickets can be purchased through LiveNation and other major retailers. Prices range from $56 to $85 plus additional fees.

What do you think of the 2014 lineup? Let us know in the comments section below!

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