Traditional singer of "Ievan Polkka" (4)

I believe the answer is:

finn

(Other definitions for finn that I've seen before include "adventurer in Mark Twain story" , "Native of Espoo" , "National" , "Trollope character" , "Twain's Huck; Trollope's Phineas" .)

I've seen this clue in The Washington Post.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.