Cult death / thrash from Peru!
HADEZ at that point had only released two demos (maybe a third, depending on when Hadez Attack was recorded).
The other two bands only ever released demos.
MORTUORIO released one official demo, Cámara de torturas, in November 1989.
SEPULCRO released a rehearsal and two demos between 1988 and 1990.
Both have not released new material since 1990, although they are not dead and still play live!
On this day in 1990 all three played at La Caverna, Lima, Peru. Other bands on the bill, organised by Mosh 'zine, were SUCUBO, TRAUMA and MORTEM.
Note the date given on these videos is 1989. I've checked a couple of sources, including an official MORTUORIO compilation, which give the year as 1990. The compilation - Cámara de torturas (2005) - includes more of their set from this gig. The tracks are: "L.N.R.", "Brutal genocidio", "Harto" and "Cámara de torturas".