Other performing live artists were: Dannic, Fedde Le Grand, Naughty Boy, Lost Frequencies, Faithless, Parov Stellar, Scooter, Ella Eyre, James Arthur, Kwabs, Labrinth, John Digweed, Sasha, Nneka and Tujamo.

There were seven DJ headliners who were announced in January 2017: Afrojack, Armin van Buuren, Axwell Λ Ingrosso, Dimitri Vegas & Like Mike, Hardwell, Martin Garrix, Marshmello and Steve Aoki.

Other performing artists were: Alan Walker, Don Diablo, Dillon Francis, Charli XCX, Redfoo, Era Istrefi, The Avener, Dannic, Lost Frequencies, Sander van Doorn, Dubfire, Kadebostany, Jamie Jones, Loco Dice, Solomun, Sven Väth, Andy C, Borgore, Pendulum, Chase & Status and GTA, among others.

The first artists announced for the 2018 edition are: Black Eyed Peas, KSHMR, The Prodigy, Bonobo, Afrojack, Armin van Buuren, Alesso, Dimitri Vegas & Like Mike, Diplo, Kygo, The Chainsmokers, Jason Derulo, Tiësto, Fedde Le Grand and Steve Aoki.

[13] Amongst the first artists announced for the 2019 edition were: Robbie Williams, Martin Garrix, David Guetta, Bastille, James Arthur, Dimitri Vegas & Like Mike, Timmy Trumpet, Boris Brejcha, Silenzio and Tale Of Us.

The main headliners were J Balvin, Anne-Marie and a wide range of DJs: Kygo, Lost Frequencies, David Guetta, Steve Aoki, Dimitri Vegas & Like Mike, Tujamo, Paul Kalkbrenner, Kasia Sobczyk.

The main headliners included major acts like Imagine Dragons, Ava Max and Bebe Rexha and it marked also the return of Armin van Buuren after 4 years at Untold.

On 21st March 2024 new artists were revealed including Alok, Dimitri Vegas & Like Mike, Lost Frequencies, Martin Garrix, Purple Disco Machine, Timmy Trumpet, Carl Cox, Fisher and Solomun.

Other artists include Louis Tomlinson, Steve Aoki, Jax Jones, Burna Boy, Zerb, Tujamo, Nicky Romero, Milky Chance, Mahmut Orhan, Tom Grennan, Blasterjaxx and Salvatore Ganacci.

In a bid to support local tourism, 2016 festival goers benefitted from a 50% discount on the admission price for several tourist attractions from the historic region of Transylvania.