His pal Tinie Tempah will take his place.
English singer and producer Labrinth has pulled out of the upcoming Optus RockCorps gig, blaming scheduling difficulties.
The artists was due to perform alongside The Script and Guy Sebastian at the Hordern Pavilion show on Thursday 11 April. His slot has now been filled by his good mate and Earthquake collaborator Tinie Tempah.
The Optus RockCorps show gives fans the chance to earn their tickets by volunteering in their local community. They must complete four hours worth of helpful service with a project that has been organised by Optus RockCorps to be eligible. Head here for more info.