Beyonce has added yet another date to her UK touring schedule, and this time it's all in the name of charity.<br/> <br />[UPSOT]<br/> <br />The "Halo" singer will headline a special concert in London on June 1.<br/> <br />This is part of her work for the Chime for Change campaign, which she co-founded with actress Salma Hayek and Italian fashion designer Frida Giannini.<br/> <br />"The Sound of Change Live" will also see other international acts taking to the stage at Twickenham stadium, which were announced by American singer-songwriter John Legend.<br/> <br />[UPSOT]<br/> <br />And while Legend and Miss B will surely be looking forward to this very special gig, Legend added that he hopes this wouldn't be a one-off.<br/> <br />SOUNDBITE: John Legend, singer, saying (English):<br/> <br />"I hope it continues and has a life of its own. And like we said earlier when we introduced the concert it's not just about one night, it's about a movement, and I know this movement has legs. I know Gucci has a long-term commitment to this,
