Mr Cynical gets his bum chums in and does some country covers. Jeffrey Walker (born March 25, 1969) is a bass guitarist and singer from St Helens, UK. He is best known for his work with the death metal/grindcore band Carcass for which he was also the main lyricist. Before Carcass, he played in the punk band the Electro Hippies. After the demise of Carcass, he went on to form Blackstar with two former Carcass bandmates. In some territories the band was called Blackstar Rising.