On the recent When We Get to Meeting (Dead CEO), a collaboration with Amsterdam-based English harmonica player Seamus Cater, avant-garde banjoist and former Chicagoan Uncle Woody Sullender continues to efface the imagined boundaries between folk and experimental music. On first blush it definitely sounds rustic and rural , but then you come across a piece of back-porch minimalism like “While Sails Billow,” which you can hear for yourself below—as Cater blows warped drones, Sullender scrabbles out brittle, tumbling arpeggiations.