British singer Ed Sheeran denied that he simply altered other artists’ music and words to pass their work off as his own as he gave evidence on Monday in copyright trial over his 2017 chart-topping hit “Shape Of You”. The award-winning singer is in a legal battle with grime artist Sami Chokri, who performs as Sami Switch, and music producer Ross O’Donoghue, who argue “Shape of You” infringes “particular lines and phrases” from their 2015 song “Oh Why”. Questioned by their lawyer Andrew Sutcliffe at the High Court in London, Sheeran, 31, said he had not been aware of Switch at the time he is ac…