Original sentence: His first major signing was the alternative UK indie band Daisy Chainsaw followed by signings of singer/songwriter Martyn Joseph and Manchester duo, JJ, both of whom he succesfully negotiated recording contracts for with ‘CBS Records’ now known as ‘Sony Records’
Edited sentence: His first major signing was the alternative UK indie band Daisy Chainsaw followed by signings of singer/songwriter Martyn Joseph and Manchester duo, JJ, both of whom he successfully negotiated recording contracts for with ‘CBS Records’ now known as ‘Sony Records’