To raise the awareness of AIDS, Annie Lennox joined forces with twenty-three female acts (including Stone) and recorded the song "Sing", which was released on World AIDS Day on 1 December 2007, when Lennox performed at one of Nelson Mandela's 46664 concerts at Johannesburg's Ellis Park Stadium.
For at skabe opmærksomhed omkring AIDS gik Annie Lennox sammen med 23 kvindelige musikere (deriblandt Stone) og indspillede sangen "Sing", som blev udgivet på World AIDS Day 1. december 2007, da Lennox optrådte ved en af Nelson Mandelas 46664 koncerter ved Ellis Park Stadium i Johannesburg.