2007 SE Powell Blvd., 503-232-8845, artichokemusic.org.
An indispensable vanguard of the local acoustic community for nearly a half-century, ACM's full-service music store stocks all tools of the unplugged musician's trade. There's an adjoining performance space, and Artichoke offers workshops on topics ranging from "Live Looping" to "Playing Well With Others." The place got its name, or so the legend goes, because it's all heart.