The central piece on the album is a Fantasia composed of a instrumental chorale in Renaissance style, which serves as the inspiration for a series of seven 'doors' which are sometimes variations of the chorale's them and sometimes true flights of fancy.  The style of the doors ranges from Baroque to modern pop rock with plenty of variety in between.  Each of the doors is intended to express an emotion, or so the liner notes explain.  I found it a very enjoyable essay, but the emotional content is more intellectual in nature than visceral.