The first 4 demos:

Sick Disgust Eternal (Demo I 1988) 1-3
Sexual Mutilation (Demo II 1989) 4-7
Anatomia Corporis Humani (Demo III 1989) 8-11
Autopsied (Demo IV 1989) 12-14

Some old-school Death Metal from Sweden. Known in '86 for their demo under the name of Corpse, the drummer and guitarist were then in a band called Putrefaction until they got back together and became Grave. Check out the illustrious first LP 'Into The Grave' from '91 also.