Fredrik Akesson, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Mikael Akerfeldt, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Mikael Akerfeldt, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Mart’n MŽndez, left, and Fredrik Akesson, of Opeth, perform at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Opeth performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Opeth performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Mikael Akerfeldt, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Joakim Svalberg, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Mart’n MŽndez, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Martin Axenrot, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Mikael Akerfeldt, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Mikael Akerfeldt, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Mikael Akerfeldt, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Mikael Akerfeldt, of Opeth, performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Fans cheer as Opeth performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Opeth performs at the Mandalay Bay Events Center during the Psycho Las Vegas music festival in Las Vegas on Sunday, Aug. 18, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Sweden’s Opeth have evolved from a death metal battering ram to Jehtro Tull-lovin’ prog rockers. The band’s stop at Psycho Las Vegas was their only U.S. performance of 2019.
— Jason Bracelin contributed to this report.