I could get very deep about what I hear in this piece, but I'll simply say that Janus is the ancient Roman god of beginnings, endings, and transitions. He has two faces - one looking into the past and another looking into the future. From there, what you hear is up to you. Hope you enjoy, and if you'd like let me know what you hear/think!
Sibelius mock up - Tuba Quintet/Ensemble