Complex sentence: Lyrics for four of the album's songs were written by the infamous Norwegian black metal musician Varg Vikernes, who was imprisoned in 1993 for the murder of Øystein "Euronymous" Aarseth (of the band Mayhem) and the arson of several churches.
Split into simpler sentences: Lyrics for four of the album's songs were written by the infamous Norwegian black metal musician Varg Vikernes. He was imprisoned in 1993 for the murder of Mayhem guitarist Øystein "Euronymous" Aarseth and for the arson of several churches.