The Ivory Lyre (Dragonbards Series #2)

Dragonbards Trilogy, Book 2. The bard Tebriel and his singing dragon Seastrider together can weave powerful spells. With other dragons searching for their own bards, they have been inciting revolts throughout the enslaved land of Tirror. Only if they can contact underground resistance fighters and find the talisman hidden in Dacia will they have a chance to defeat the power of the dark.

From the reviews:

“A riveting sequel to Nightpool. . . . A finely crafted story filled with scenes of chilling horror as well as courage and beauty. Murphy's dragon lore exhibits an exciting immediacy; her scenes of dragons in flight exalt the reader. . . . Anne McCaffrey, make room.” —ALA Booklist

“This well-crafted fantasy has a depth and scope reminiscent of Tolkien.” —Publisher's Weekly