Katie Melua is to perform at the launch of a welfare charity whose members were moved by a visit to an Aids orphange during an Aish trip to South Africa.
The singer will play an acoustic set at AfricArt, being staged by the African Social Action Project (ASAP) at the Getty Images Gallery in the West End next month.
"These guys went on a trip, saw a problem and have then gone and created their own charity to help. It is incredible and inspiring," she said.
"I took part in a trip with Nelson Mandela's charity to raise awareness. I went to visit a centre for people affected by Aids but I felt a bit useless. You want to help those people help themselves. With ASAP I like the fact there are opportunities to get stuck in."
ASAP's Marc George said: "The Aish trip challenged us to put the Jewish ethos of tikkun olam [repairing the world] into practice by doing something amazing for the desperately poor children we had visited."
ASAP hopes to raise enough to fund the welfare and education of 600 orphans.