This is a gimmick, yes, and you fully get the joke within the first 30 seconds, but it's done with the perfect balance of piss-taking and respect for the original material, as well as an affectionate send-up of the entire Country/Bluegrass scene. Familiarity with the source material is definitely required for it to work, though. S N' S are actually not the first to do this - - Hard N' Phirm did some comedy bluegrass covers, and noted banjoist Tom Adams has been doing straight instrumental versions of famous Classic Rock and Pop songs for a while now. Steve N' Seagulls are the only ones (that I'm aware of) giving this treatment to Hard Rock and Heavy Metal, though; and I doubt if anyone else in this tiny world would have the audacity and skill to pull off a yee-haw, down-home pickin' version of Iron Maiden's ‘Aces High’ as their album opener. They're certainly the only band singing Cooter-ized versions of timeless Metal/Hard Rock classics with a Finnish accent.
"Brothers in Farms" continues their established formula of irreverent fun. Aside from their musical skill at transcribing and playing these songs across such a bizarre bridge, Steve N' Seagulls deserve high praise for their inspired choices of covers. Just be warned, they sometimes tinker with the arrangements. The best explanation and justification I can give for checking this is to list the most noteworthy of the album tracks:
Iron Maiden - Aces High
Metallica - Sad But True
AC/DC - It's a Long Way to the Top (If You Want to Rock n' Roll)
Guns n' Roses - You Could Be Mine and November Rain (Cut to 5 minutes, and unfortunately, without the climactic ending)
Nirvana - In Bloom
Megadeth - Symphony of Destruction
Phil Lynott and Gary Moore - Out in the Fields (Wow!)
It's like ironing a giant Motorhead patch onto denim overalls, instead of a sleeveless denim jacket: so wrong, but hilarious, and done well enough to deserve applause and a grin.