Related Information for Jack There are at least 6 bands/artists named Jack: 1) Jack is a grindcore / crust band from Hungary. A Welsh/Anglo band formed by Anthony Reynolds.Jack were formed in Cardiff, Wales in 1992, based around the songwriting partnership of Anthony Reynolds and guitarist Matthew Scott, both of whom had relocated to London by the end of 1993.By the end of 1995, Jack was a six piece, signed to Too Pure/Beggars Banquet records in the UK... read more