Two years since the death of Grammy Award winning singer and Grease star Olivia Newton-John, a never-before-heard song has been released. Titled ‘My Dream’, the song is a duet produced by Jim Brickman and features Italian operatic pop trio Il Volo. It came out of a songwriting session 15 years ago but was never finished. It was rediscovered by Brickman and lyricist Victoria Shaw. Now completed, the proceeds of the song benefit the Olivia Newton-John Foundation Fund – an independent charity sponsoring global research into plant medicine for cancer. The British-Australian artist behind hits like…