i will compare the album to Planet X and to Derek Sherinian, and they are both in jazz related rock section (both are metal fusion though), just that Dødsverk use hornsection also, which is quite jazzy, like a metal version of Chicago,

• Vanlig Dag - Dødsverk   heavy jazz fusion metal, free jazz, and funk
• Slave Uten Lenker - Dødsverk funky metal, with jazz imporv bridge, solos, jazz fusion midsection
• Paradis I Praxis - Dødsverk funk/metal, vailing saxes, heavy jazz fusion parts, with atmopherical section, akin to Crimson esque, jazz parts, bop influence
• Sjelefred - Dødsverk swingy but very heavy, shuffle groove, groovy saxophonne, funky, bop. jazz fusion midle section
• Fanget Frihet - Dødsverk nu jazz, atmopherical, electronica ambient, post rock, heavy, delicate use of viberaphone,
• Tid Som Er Forbi - Dødsverk heavy jazz, fusion, funk, swing,, groovy, reminds of 21 Century Schitzoid mam, in its free form, nu jazz section
• Patetisk Klimax - Dødsverk light heavy funny jazz funk. like P-funk, Bootsy Collins,
• Paradis I Praksis - Dødsverk, rubbery, jazz, Steely dan esque, odd time sigs, nu jazz, delicate guitar plaing in jazz style, swing, post rock
• Seierherre - Dødsverk insane without comparising,, jazz, fusion, groovy,
• Blomst - Dødsverk - jazz rock, odd time sigs, post rock

utraditional metal/rock instruments: Saxophone, trombone, fender rhodes, organ, vibearphone, piano, moogs, 

the non jazz album "Song for All the Family" is more heavy avant symphonic prog rock (none suits) songs is conctructed around mellotrons and symphoic structures, and ambience rather then jazz and crazy, it is symphonic (some tingles of jazz gutiar chords here and there), prog, non really far of ELP and Genesis in bombast, just more metal and noise and alternative, (think of more melodic, less psychadelic Stupid Dream version of PT, more symphonic and avant garfde rythems), the symph side of Crimson, married with dissonance Crimson, rather then jazz and minimalistic Crimson (which the alnbum Sjelefred is more close to ),

the drumming can remidns of more rappid Bruford, and guitars is quite Frippish, even the chord structures is more Crimsonic, on this album, .

Sjelefred is avant-garde, jazz., alternative, funk, nu jazz, ambient, polka, metal album.

Fun For All the Family is avant-garde, symphonic, crimsonic, jazzy, metal album