Two minutes and 30 seconds into “Proper,” the first track on Sun Araw ’s new Rapid Response EP, Cameron Stallones is beside himself with glee. The L.A. jamnaut has long peppered his endless psych-rock sprawls with distant affirmations, sort of like a deeply sedated Lil Jon , as if he’s encouraging himself to keep the vibe going for another one or two or 10 minutes. But as he lands on an especially promising synth chord on “Proper,” he throws all decorum to the wind, sounding like someone getting high or tripping on acid for the first time and hearing an especially mind-blowing piece of music: “That’s the angels singing!”

It would seem that way. In a 1989 study, a Plymouth University professor named Joel D. Funk determined that the music of new age artists like Iasos and Jonn Serrie most matched what people who’d had near-death experiences heard in their head while they were dying.…