So I have finally started the sequel to the Tree Singer -0m though sequel is not really right. The idea is that there will be four novels linked by the stranger Simon but they will not read in any order.
The Tree Singer - done.
The Forge Singer (working title) (have written about 3,000 words so far.
Its about a boy called Waylon who masters fire and becomes a blacksmith.
The Wave Singer - A girl who called the waves for fishermen (or to save whales, not sure yet).
The Wind Singer - veryu tentative title but it would give me the four elements Earth (tree)
Fire (forge) Water (wave) and Air (wind).