This is easily one of the best reactions ever, BECAUSE you f'd up in an amazing way^^ There is a song by Manowar called Valhalla, but I'm so happy you mispicked for this one! :D
This is one of my favorite Nanowar vids, and I play this every Christmas. It might be a mistake to watch this but IMO probably better that what you thought you were watching.
5:15 It was once thought that Nicaragua and Azerbaijan were landing sites of the Vikings. That's what that line's about because they 100% never landed there. The 'Knisa grey is better than Sasha Gray' line is a joke playing on 'knisa grey' (a shade of gray) and 'Sasha Gray' (a former porn star). 6:43 'Gloria patri furnituribus in nomine IKEA' = "Glory to the father of furniture, in the name of IKEA" ...Bearing in mind that they're using fakey comedy Latin so it's not technically accurate. Also, the part where the choir is singing brand names and then describing the product? Those are accurate. VITTSJO does indeed manufacture, for IKEA, a black-brown laptop stand with tempered glass. _They did the research_ the absolute madlads.
This was really funny ahahah There was 1 reference you might have missed since it was in Italian: towards the end he sings "FALEGN - AMEN!!" Falegname is the italian word for woodworker :D
There is a tradition of IKEA songs. The first one I remember hearing was on a BBC Radio 4 comedy programme and they had a topical song every week written by Mitch Benn. Here is his IKEA song: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-mO7W2Tytfvk.html He made a video of him standing in Viking get up on a roundabout outside an IKEA in London. I think he even released a single of this song.