Anders Bryngelsson and Mattin make up Regler, a project of varying genres performed on rock instruments, following sets of rules to create conceptual sound works; Regler #4 deals with harsh noise walls, generating a 30 minute piece of thick, savage sound.

Mattin takes 5 spontaneous 5-minute songs from 5 musicians, and a 25 minute concert structured by 5 instructions based on those song titles, then records vocals for the 5 songs as a singing lecture, then superimposes all 3 to create the five 5-minutes songs on this album.