The Finnish band Eläkeläiset (The Pensioners) is known for playing humorous cover versions of well-known pop and rock songs—including heavy metal—to a fast humppa beat (a traditional Finnish polka-like dance style). The other thing Eläkeläiset is known for is public drunkenness: The group’s members are notably inebriated for all of their performances and recordings.
This according to Eläkeläiset: Suuri suomalainen juopottelukirja (Eläkeläiset: The great Finnish drinking book) by Ilkka Mattila (Helsinki: Like, 2000, 2001, 2003, and 2008). Below, Eläkeläiset’s version of Zombie by The Cranberries.