On Silencer's sole album, Death - Pierce Me, Nattramn used a bizarre style consisting of high-pitched shrieking and other extreme vocal techniques, allegedly exacerbated by self-harming while recording.
While recording the vocal parts on the album, Nattramn allegedly self-harmed; cutting his wrists and hands.
[4] After the release of this album, it is rumoured that Nattramn entered Sankt Sigfrids sjukhus, a psychiatric hospital located in Växjö, although the circumstances surrounding his admission, and whether he was sectioned or went voluntarily, are subject to conjecture.
After several years of inactivity, he created the dark ambient solo project Diagnose: Lebensgefahr and released an album, entitled Transformalin, in 2007.
This 21-minute piece is described as the beginning of Nattramn's musical career, and was initially written and recorded several years prior to his joining Silencer.