McKennitt's recordings always have the quality of a spiritual sojourn; her songs are those of a seeker, whether she's setting Yeats, Scripture, or her own words to her compositions. It's this that attracts people to her music, and The Book of Secrets is no exception, whether it's the lazy rhythms of "Marco Polo," the sober joy of "The Mummers' Dance," the poignancy of "Skellig" or "Dante's Prayer," or the drama of Alfred Noyes's "The Highwayman." "The Highwayman" is a particularly strong effort, especially in comparison to her earlier setting of "The Lady of Shalott"; McKennitt has become much more skilled at musical narrative. This is music that can be enjoyed on many levels, from McKennitt's growing skill as a composer to the deeper questions posed by her lyrics.