Although he hasn't been named as the official singer of Skid Row, former DragonForce vocalist ZP Theart performed with the band on July 30th at Hard Rock Live in Biloxi, Mississippi. He has replaced TNT singer Tony Harnell, who fronted Skid Row briefly and announced his departure from the band in December 2015. Fan-filmed video is available below.

Skid Row posted a message following Harnell's announcement that he'd left the band:

“To the Skid Row faithful, as you may know Tony Harnell quit the band yesterday. We found out about his decision the same way all of you did, via his post on social media. He had posted that he was no longer in the band before informing the band personally.

“The last we spoke with Tony was on December 17th. He was in the hospital being treated for ‘bronchitis with asthmatic symptoms’. We were all very concerned and offered any assistance we could to help him get healthy. Due to his condition we were forced to cancel our show in Chicago on December 19th. The next time we heard anything was his post yesterday.

“That being said, we are all moving forward and wish Tony the best in his future endeavors. Lastly, amidst all of the rumors and speculation, there has been no talk of a reunion nor are we opening for Guns N Roses. That’s it for now. We’ll keep you updated as best we can. Thanks for your support and understanding. See you in 2016!”

Harnell also posted the following message on Facebook, putting a stop to any potential war of words:

"I owe the fans and band an apology for the Facebook comment I made last night, about being disrespected - well, I didn't exactly show an example of respect, and I truly apologize. I let my emotions get the best of me. Again, thank you all for all the good we had, let's celebrate that part of it all."