Before my dad passed away, I had the chance to show him the film and explain that he was the biggest influence in the moulding of the older Mandela. I moulded how Mandela moved on my old man, they have very similar traits. Tree is the most personal song on this album for me. After spending three weeks in the studio, I knew it was time to write a song that addressed his passing. The perspective is like, "He's gone, man. I wish I could say this to him." And that's how the first lyric came; it was really sort of a love letter to him.