(1991) Rehearsal (demo)

"Katatonia formed in 1991 in Stockholm, Sweden and was brought together by long time friends, Anders Nyström (aka Blakkheim) and Jonas Renkse (aka Lord Seth). After more than a year of rehearsals and composing, the first real fruits of their labour came to light in mid 1992 with the release of the demo ‘Jhva Elohim Meth’, recorded at Sweden’s Gorysound Studio and produced by the multi-musician Dan Swanö"

So yeah, it could be possible, but I don't think it was released? Let's wait for a member's anwser. ;)
 
oh this is ages ago and its hard to remember all the details, but that tape does sound familiar, it was however not an official recording. it was just some pre-katatonia "who are we and what are we gonna do" constellation. very ugly and raw stuff.