A-Z is an American hard rock and progressive metal supergroup formed in 2020, the project of former Fates Warning and Warlord drummer Mark Zonder — the band name standing for Alder through Zonder. The core lineup features Fates Warning vocalist Ray Alder, bassist Philip Bynoe (Steve Vai, Warlord), guitarist Joop Wolters, and keyboardist Vivien Lalu, releasing their self-titled debut on Metal Blade Records in 2022 with artwork by Hugh Syme. A sophomore album, A2Z², followed with guitarist Nick Van Dyk (Redemption) and Simone Mularoni (DGM) joining the collaboration, continuing in a melodic, AOR-influenced progressive metal direction.

Alter Bridge is an American hard rock and heavy metal band formed in Orlando, Florida in 2004, built from the nucleus of post-Creed members Mark Tremonti, Brian Marshall, and Scott Phillips, joined by vocalist Myles Kennedy. Their second album Blackbird (2007) marked a significant critical breakthrough, and subsequent releases including Fortress (2013) and The Last Hero (2016) debuted in the Top 10 on charts in both the UK and US. The band is defined by Tremonti's dual-guitar attack and Kennedy's operatic range, placing them at the heavy end of the mainstream American rock spectrum.

Andrew W.K. is an American musician and entertainer, born Andrew Wilkes-Krier in Michigan in 1979, who built a career around maximalist party rock fusing heavy metal riffing, glam energy, and pop melodicism. His 2001 debut I Get Wet on Island Records, anchored by the anthemic "Party Hard," became a cult classic and established his persona as an unironic apostle of positivity and excess. He has released six studio albums through 2021, including God Is Partying, while also maintaining a career as a motivational speaker and public figure.

Another Day Dawns is a hard rock trio from Lehighton, Pennsylvania, founded in 2010 by drummer Nick McGeehan and guitarist Tyler Ritter, with vocalist Dakota McGeehan completing the lineup. Their sound draws on post-grunge and alternative metal, citing influences ranging from Foo Fighters to Avenged Sevenfold, and the band built a regional following through support slots alongside Avatar, Buckcherry, and Cold. Their debut EP, Stranger, was recorded at Dark Horse Studios in Franklin, Tennessee and produced by Joe Rickard.

Art of Anarchy is an American hard rock supergroup formed in 2011, built around brothers Jon and Vince Votta and featuring high-profile rotating vocalists. Their self-titled debut (2015) prominently featured late Stone Temple Pilots vocalist Scott Weiland, though the nature of his involvement was publicly disputed; Scott Stapp of Creed replaced him for the band's second album in 2017. Later lineups brought in Jeff Scott Soto (Sons of Apollo, ex-Journey), alongside guitarist Ron Thal (Bumblefoot, ex-Guns N' Roses) and bassist John Moyer (Disturbed).