What is the fine-grained topic of the following text: Sub-titled “MMX-MMXVI (a Farewell to Kaotoxin)” the album focuses on twelve key releases from the KAOTOXIN back-catalogue by AD PATRES, DARKALL SLAVES, DEHUMAN, INSAIN, MERCYLESS, MITHRIDATIC, NEPHREN-KA, OTARGOS, PUTRID OFFAL, SAVAGE ANNIHILATION, SIDIOUS and VxPxOxAxAxWxAxMxC. Only return the topic.
The farewell album of KAOTOXIN featuring key releases from various artists.