Messiah J & The Expert are a Choice Music Prize nominated rapper/producer duo based in Dublin, Ireland.

They originally met at a Scratch Perverts instore in 1999 and became part of a seven-strong collective, The Stonecutters.The Stonecutters consisted of Messiah J, The Expert, Robbie Delaney, DJ Splyce, Relevance, Grammar and DJ Mayhem. They practiced and wrote weekly in impromptu surroundings including Harold's Cross Racetrack and Raheny Dart Station. They recorded what is considered to be THE lost Irish Hip-Hop album called 'Please Daddy, Don't!'. Due to infighting the album never saw the light of day but is believed to contain an early version of 'Year Of The Genie' which came out on 2008's 'From The Word Go'. Alongside, DJ Mayhem, they formed Creative Controle. A four-track demo soon made its way into the hands of No Disco presenter Leagues O'Toole who released their first two singles ("Bloodrush"/"The Dose" and "Check the Vision") on his label, Volta Records (co-owned by Dave O'Grady).