Elvis will be making an appearance at the Piece Hall in Halifax today.
His music performance can be seen at a multi agency event with West Yorkshire Police, West Yorkshire Fire and Rescue and Yorkshire Ambulance Services.
The Partnership Day will be helping to raise money for charity.
It is a free event and there will be rides, emergency service vehicles for people to look around, music stalls and much more.
Also attending will be representatives from Overgate Hospice, Elland, and other local charities.
The day will run from 10am until 4pm.