There are at least five bands/artists named Procreation:

1. Procreation is one of electronic music artist Samuel Geiser's many aliases. As Procreation he has released music on Compost Records. His other aliases include Deetron, GSP, Karakter, Sam Geiser, Soulmate, Starfighterz, Vamp Circus. (Info gathered from dicogs.com)

2. Procreation is a death/black metal band from Canada.
They started in 1989.

3. Procreation is death metal band from Sweden.
They also started in 1989.

4. Procreation is a death metal/grind band from Rhode Island, USA. They released a demo entitled "Putrid Existence" in 1990.

5. Procreation is a death metal band from the Netherlands.
They started in 2012. They have one release so far, an album called Ghostwood released in 2014. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.