Amy Sky is a Canadian singer-songwriter, record producer, theatre actress, and television host. Sky started classical music lessons at the age of five, and plays piano, guitar, cello and recorder. She has a degree from the University of Toronto in music theory and composition. In 1983, Sky was signed as a staff songwriter to MCA Music Nashville, and subsequently to Warner-Chappell Music in Los Angeles, EMI Music Los Angeles, and Warner-Chappell Music Germany. As a writer she has penned songs for many artists including Diana Ross, Anne Murray, Olivia Newton-John, Reba McEntire, Belinda Carlisle, Aaron Neville, Heart, Cyndi Lauper, Mark Masri, Roch Voisine, and Sheena Easton.

Blood Brothers is a musical with book, lyrics, and music by Willy Russell and produced by Bill Kenwright. The story is a contemporary nature versus nurture plot, revolving around fraternal twins Mickey and Eddie, who were separated at birth, one subsequently being raised in a wealthy family, the other in a poor family. The different environments take the twins to opposite ends of the social spectrum, one becoming a councillor, and the other unemployed and in prison. They both fall in love with the same girl, causing a rift in their friendship and leading to the tragic death of both brothers. Russell says that his work was based on a one-act play that he read as a child "about two babies switched at birth ... it became the seed for Blood Brothers."