Die Pellinor-Saga 04: Das Baumlied

Blurb

The Singing is the fourth and last novel in Alison Croggon's Pellinor series. The novel was completed in June 2007 and was published in Australia on 30 June 2008.
Direct quote from Alison Croggon:
"I'm pretty certain [the singing will] open in Innail and that there will be a travelling theatre troupe in there somewhere. I am planning to sit down and write the thing in the second half of next year - I haven't been contracted, but Walker is anxious to get a publication date, and would like to keep the series on track.
It has been described by a fan as:
"It is such an amazing tale of good versus evil. I'd thoroughly recommend it to anyone who enjoyed The Lord of the Rings."