Knutsen & Ludvigsen
Knutsen & Ludvigsen (English: Tootson and Ludiwood) was a Norwegian singing duo consisting of Øystein Dolmen ("Knutsen") and Gustav Lorentzen ("Ludvigsen").
Writing and performing various songs mostly aimed at children, they released seven albums, two of which received Spellemannprisen, the Norwegian Grammy. They had several #1 hits, including "Grevling i taket", "Hallo! Hallo!" and "Dum og de…