[5] In 1998, childhood friends Janove Ottesen and Geir Zahl released their only album by their band gnom called Mys.

However, they were known well in the area around Stavanger in Norway, having played as the local band Blod, snått & juling, and one of the songs they wrote after Mys called "Bastard" got good crowd response.

[7] Ompa til du dør also made Kaizers Orchestra the highest-selling rock debut to be released in the Norwegian language.

In connection with the release of Maestro, Kaizers Orchestra signed an international record deal with Universal Germany, taking them from one of the smallest labels to one of the biggest.

[10] A book by Geir Zahl's older brother Jan, called Kontroll på kontinentet was released 18 October 2006.

They only played three shows in 2007: one in Hungary, at the Sziget Festival, one in Norway, at Cementen, and finally at the German art expo Documenta.

On 12 December 2007, Kaizers Orchestra received "Bragdprisen" (Achievement Award) from the county of Rogaland, due to their efforts to promote their native Bryne dialect.

[13] On 18 December 2009, "Ompa til du dør" was voted as the best Norwegian song of the decade in a public poll on the website of NRK P3, one of the biggest radio stations in Norway.

[18] In the following days, fans who had bought the shirts noticed QR codes printed inside, which led to the website dinegamledagererna.no.

Those who accessed the website through a QR code received a one-time message telling them they were "one of the 107", while for other visitors the site displayed a music box playing an unknown melody, and allowed people to enter their contact information for further updates.

Some fans that registered on the site later received a physical version of that music box delivered to them, along with a QR code.

[19] After two weeks of cryptic teasers, the website and Instagram published a promo video with the music box theme and full orchestration, ending with cut-out letters showing "7.11.1907, 19:07".

III, both Geir Zahl and Janove Ottesen had just finished major solo releases, Terje Winterstø Røthings' band Skambankt had recently completed their farewell tour, and some fans even discovered that the kindergarten where Helge Risa taught had a job listing for his position.

[20] Following weeks of speculation and teasers, the video Dine gamle dager er nå premiered on the official Kaizers Orchestra YouTube channel on Monday, November 7, at 19:07, the exact time teased previously.

They are regarded as one of Europe's best live acts, with their 2002 Performance at Roskilde Festival earning them "Concert of the Year" by Danish media.

The lyrics of Ompa til du dør consist of stories of a handful of characters involving war, the resistance, and the mafia.

Their second album, Evig Pint, consists of fewer characters and more focused, darker themes: life, death, betrayal, drugs, and once again, the mafia.

For their fourth album, Maskineri, they attempted to break their tradition and made none of the songs connected; they also stopped using characters.