The Day of the Dissonance (Spellsinger, Book 3)

Alan Dean Foster

Clothahump, the wizard, is dying. All that can save him are rare medicinal powers to be found across the Glittergeist Ocean. Jon-Tom, the Spellsinger, sets out on the most perilous pilgrimage of his still-young career, armed with only his music-making duar and a reluctant Mudge, the otter, as his guide. Original.