Hardwell & Metropole Orkest
Hardwell & Steve Aoki & Kris Kiss
Sick Individuals & Jewelz & Sparks
Hardwell & Maddix
Mike Williams
Justin Mylo & SWACQ
Taku-Hero & Funk Machine x Quintino vs. Hardwell & Jake Reese
Hardwell & Blasterjaxx & Mitch Crown
Hardwell & Kaaze & Loren Allred
New Blood & RCOP
Hardwell
John Christian
Maddix
Hardwell & Suyano & Richie Loop
Tiësto
Hardwell vs. Spankox & HOOX & Harrison (EDM)
Sidney Samson & Gwise
Dada Life
SaberZ vs Armin van Buuren
Olly James
Cascada
Hardwell & VINAI & Cam Meekins
Hardwell & Timmy Trumpet
Hardwell & Wildstylez & KiFi
Ran-D
Dimitri Vegas & Like Mike & Hardwell
Lyrics for this song have yet to be released
The Underground was produced by Timmy Trumpet & Hardwell.
Hardwell & Timmy Trumpet released The Underground on Mon Jan 22 2018.