I enjoyed this recent post by Mauri Kinnunen about a 1937 article in the Chicago Daily Tribune, in which joiking is compared to swing music, and cocktails prove disappointing to some Swedish Laestadians. It may be a stretch to compare joik to swing, but both are characterized by energy and improvisation.
Go read the article, then come back and enjoy these clips.
Instrumental “cocktail swing” recorded in Sweden in the same year as the article, 1937:
The amazing Marie Boine inhabits this spine-tingling “Goaskinviellja / Eagle Brother” at the Oslo Opera House in 2009: