After a handful of lo-fi cassette releases, Michelle Zauner’s solo recording project, Japanese Breakfast, entered the national spotlight in 2016 with the release of Psychopomp, a collection of dreamy indie-rock tunes centered around the death of her mother and the grief that ensued. The album was re-released by Bloomington, IN label Dead Oceans before Zauner began work on her expansive follow-up, Soft Sounds From Another Planet. Released last year, the full-length displays a step up in terms of production quality, with Zauner’s textured, shoegaze-y guitar work grounding otherwise heavenly songs about interpersonal relationships. Maryland’s Snail Mail and Atlanta’s Art School Jocks open Wednesday’s show at the 40 Watt Club.