The opening of Shine On has always evoked strong images: the changing light of sunrise, beams of light breaking cloud cover, color rolling across a vast sky. Pink Floyd here achieves something that rarely happens in popular music: an instrumental passage that implies narrative. I often think about Fantasia – the child’s introduction to classic music – which invites us to contemplate how passages of music can tell entire stories. People working within the confines of the three-minute pop song don’t have to think about creating musical narratives with a beginning, a middle and an end. They say whatever they have to say in a few words and even fewer chord changes. Pink Floyd, of course, liked to go beyond the pop song formula, and they experimented with longer song structures and extended instrumentals. This particular narrative is only about 13 minutes, but it could have easily been a longer piece. It’s an epic composition.