Today, Firefly Music Festival announced their 2020 lineup, featuring five-time 2020 GRAMMY winner Billie Eilish, past GRAMMY winners Rage Against the Machine and GRAMMY nominees Khalid, Blink-182 and Maggie Rogers as headliners.

The four-day East Coast camping music festival will also feature performances from 2020 GRAMMY winners Cage The Elephant, along with past GRAMMY winners Diplo, Big Boi, Van Halen's David Lee Roth, as well as Tove Lo, Run The Jewels, and Omar Apollo. The 9th annual event will take place in its tree-filled home of Dover, Del. on June 18–21.

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K.Flay, Cold War Kids, RL Grime, CHVRCHES, Kali Uchis, Clozee, CRAY, The Band Camino, Loud Luxury, Illenium, Haiku Hands and Rainbow Kitten Surprise are among the other acts slated to bring the groove across the massive fest's six stages.

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In October 2019, Firefly's organizers announced the 2020 event would return to a four-day format, after reducing it to three days in 2019. As reported by Billboard, the AEG-owned event put $1 million into its infrastructure ahead of the 2019 festival, which was headlined by Panic! At The Disco, Travis Scott and Post Malone

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Firefly recommends festival attendees register now on their website to receive an early access code to purchase tickets. The presale begins this Fri., Jan. 31 at 10 a.m. ET, with the general sale beginning Mon., Feb. 3. More info on registration, tickets and lineup can be found at fireflyfestival.com.

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