Dragons' Den | Den Watts | Unter den Linden | FK Baník Sokolov | Den Helder | Dragons' Den (UK) | The Den | Deutschland sucht den Superstar | Den Nationale Scene | Den | Den Haag Hollands Spoor railway station | Wu Den-yih | The Lyon's Den | Joop van den Ende | Alphen aan den Rijn | Walter van den Broeck | The Den (television) | Samuel van den Bergh | Remi Van den Broeck | Ninja in the Dragon's Den | Michiel van den Bos | Gott erhalte Franz den Kaiser | Dragon's Den | Dirk van den Broek | Deutschland sucht den SuperStar | Aus den sieben Tagen | Willemsoord, Den Helder | Schlag den Raab | Sasha Sokolov | Kamen Rider Den-O |
Perpetuum Music was founded in 2009 by Den Sokolov in Russia as a managing company for the series of events and a media projects, and as a partner of recording companies: "Nikitin" (Warner Music licensee in Russia and CIS) on the promotion of its artists and tracks, "MLYN" (Ukrainian managing company, well known as an official management for Taisia Povaliy), and "King Ring" (independent hip-hop label in Russia and CIS).
After leaving the company "Nikitin" by Den Sokolov and founding his own company "Perpetuum Music", radio show "Atlantica" was aimed for premieres of new music from different record-labels.