Franz Schubert's masterpiece, his song cycle Winterreise, bewildered his friends when he first played it to them. Two centuries on, it still challenges musicians of every generation. In this beautiful film, baritone Benjamin Appl and pianist James Baillieu make their own winter journey, reimagining Schubert's songs at the top of a mountain pass in Switzerland in a setting that emphasises the timelessness of the composer's music.