Taylor Swift’s hotly anticipated new album, “The Tortured Poets Department,” dropped on April 19 with more than a few surprises. In addition to the 16 initial tracks Swift dropped at midnight, followed by a surprise release of a second volume a few hours later, “Tortured Poets Department” comes with an introductory poem by rock legend Stevie Nicks. If you’ve been streaming the new album today, though, you’ve missed Nicks’ prologue.