U2 joined Senegalese artist Baaba Maal on stage tonight as part of London's celebrations for Island 50. Baaba and Yusuf Islam (Cat Stevens) were sharing the bill at Shepherd's Bush Empire. The band joined Baaba Maal for a version of U2's 0ne to the surprise of the sold out crowd.

Remember American David, Bono's homage to Elvis? The piece was written back in 1995 and was sent out to Propaganda subscribers way back when...