The live gig takes place on 18 September at the Emmanuel Church in Wimbledon with Melissa performing alongside the Singology Wimbledon Choir. Malory Torr and Rakit will both be supporting on the night.
Proceeds from the gig will support the next series of Gig in a Gallery concerts which will fundraise for the charity Fixers. The charity works to help young people aged 16-25 through a combination of both music and art.
Following this an online auction of various artist merchandise from the likes of Imelda May, Jamie Cullum and Florence and the Machine will be held to raise further funds.
Find out more about the events and how to get involved through the websites below.