Music has a special magic. When you feel down, listening to some good songs will cheer you up. Fly is one of these songs. Canadian singer Avril Lavigne, 32, sings it. The song came out in April 2015. Lavigne released (发布) this song for the Avril Lavigne Foundation to support (支持) the 2015 Special Olympics World Summer Games. The song is full of strength and courage (勇气). It shows the world that everyone can shine (发光). This song also took on a whole new meaning for the singer when she was sick for some time.