We Are the Voice is a children’s charity from Elmbridge that uses its music and songs to inspire positive environmental action.
The children, aged from 7 to 16, have also been chosen to sing at COP26 in Glasgow.
Organiser Niamh Clune says the event in Kingston will be a dress-rehearsal for the Glasgow summit.
The Choir will be at Kingston Marketplace on October the 30th at 2pm.