Leona Lewis is a British pop and R&B singer-songwriter. She is known as the victor of the third series of The X Factor, going on to have a successful career in music. In the Avatar franchise, she is the singer of "I See You", the theme for the first film.[1] Speaking in 2015 following the death of James Horner, she referred to their time working together as 'One of the biggest moments of [her] life'.[2]