2019.09.15.EMG.SEN.Oliver Tree-1.jpg

Oliver Tree appears on stage in a wheelchair, citing he had an accident while "doing [his] own stunts." Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-4.jpg

Oliver Tree sings "Alien Boy." Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-2.jpg

Oliver Tree holds up a boombox and sings "Forget It," his collaboration with EDM producer Getter. Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-3.jpg

Fans hold up lights to "Alien Boy." Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-5.jpg

Oliver Tree holds up his "rockers." Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-6.jpg

Oliver Tree performs "Upside Down." Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-8.jpg

Oliver Tree performs "Upside Down." Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-12.jpg

Oliver Tree dons goggles, a chain and a bucket hat to suit his retrowave aestheric. Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-9.jpg

Oliver Tree dances to "Upside Down." Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-11.jpg

Oliver Tree sings "Upside Down." Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-13.jpg

An unhindered Oliver Tree performs in a wheelchair. Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-14.jpg

Oliver Tree yells out to the crowd. Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

2019.09.15.EMG.SEN.Oliver Tree-1-2.jpg

Oliver Tree performs at the Crystal Ballroom in Portland. Ore. on Sept. 15, 2019. (Sarah Northrop)

Follow Sarah Northrop on Instagram: @SARTAKESPICS