The Yggdrasil is the world tree in Norse mythology, and our Yggdrasil musical project started as the idea of reaching out to composers from near and far, as if travelling along the branches of the tree, and it embraced the concept of gathering around the tree as a common theme. We envisioned the richness and complexity of Yggdrasil as giving these composers the freedom to fill their compositions with ideas, reflections, stories and references connected to “world trees” – however they might interpret this – from their own lives. We hoped this would generate wide diversity in musical expression and content. We spread this process over several years. That way, it would constantly provide us with new musical challenges and new inspiration, and give us new timbres, sounds and chords – we then had the task of figuring out how to make them our own. We were also fortunate to meet and collaborate with most of the composers along the way, receiving a greater understanding of their music and the stories behind it.