After the official speeches, Damen continued to record the now-private conversation, with Hitler unaware that the conversation was still being recorded. After eleven minutes, Hitler's SS guards realized what Damen was doing and made a cutthroat gesture to demand that he cease recording. The SS guards demanded the tape be destroyed, but YLE was allowed to keep the tape in a sealed container with the promise that it never be opened again. The tape was given to the head of the State Censors' Office, Kustaa Vilkuna, returned to YLE in 1957, and made publicly available a few years later. It is the only known recording of Hitler speaking in an unofficial tone and one of the very few recordings in which Hitler may be heard delivering a narrative without raising his voice.
