Norwood, Massachusetts ambient musician/composer Devin Powers is back again with another new SineRider album on the Sound In Silence label (his third for SIS). Since I've covered his multifaceted musical career in a previous review ('A Familiar Light,' 2021) so I won't repeat it here but suffice to say he's had numerous releases in a number of genres over the years. 'Perennial' is a dozen tracks in 48 minutes; multilayered blissful, dreamy ambient pieces you can read by, work to, or just fall asleep on. Opening with the title track, it's a hazy cluster of notes that swarm like fireflies on a summer's night underpinned by yawning bass. Next, the "Roadmap" may not tell you where to go but it's a soothing, sleepy trip getting there so let SineRider handle the driving. Based around echoed piano chords "Wildflowers" sway in the breeze as you pass by. It's an ambient wintery mix in "Whiteout," where you might get lost if you didn't have that roadmap you found previously. "Capstan" is the kind of ambient I really love; it's like Eno treating Laraaji under heavy sedation. "Glowing" is a brief melambient piece with a definite repeating melody. On "Waving Goodbye" Powers employs multilayered textured pads as the main sound component with flutey, noodling synth lines woven through them. "Form" sounds rather formless at first but develops its identity halfway though. Too hard to describe "Overgrown" but maybe the title is indicative of all the elements in it. "Fragile" just sounds heavenly, "Soft Pastel" is misty guitar ambience and "Extol" wraps up the album with a melambient piano piece. I think I liked 'A Familiar Light' a bit more than 'Perennial' but I'm giving it the same rating because there are just so many good tracks on this one. The CD comes in two versions - limited edition of 50 with extra tracks and more elaborate packaging or the standard edition of 200 in the usual Sound In Silence packaging. Either way it's good stuff for ambient enthusiasts.