Singer David Bowie, one of the most influential musicians of his era, has died of cancer at the age of 69. A statement was issued on his social media accounts, saying he "died peacefully, surrounded by his family" after an "18-month battle with cancer". Tributes have been paid from around the world to the "extraordinary artist" whose last album was released days ago. Sir Paul McCartney described him as a "great star" who "played a very strong part in British musical history". Bowie's son Duncan Jones, who is a Bafta-winning film director, wrote on Twitter: "Very sorry and sad to...