Behemoth have posted some rehearsal footage of them preparing for their upcoming “Merry Christless” shows. Those will take place at Progresja in Warsaw, Poland on December 14-15 and they will see the band rejoined by former members Adam “Baal Ravenlock” Muraszko, Leszek “Les” Dziegielewski, Adam “Desecrator” Malinowski, and Mateusz “Havoc” Śmierzchalski. View this post on…