Seventh Harmonic are a female symphonic ensemble formed in Autumn 1999, creating dark melodic dreamscapes interwoven with Eastern influences. When the multi-vocalist project went into hibernation in 2004, the band's founding members Caroline Jago and Eilish McCracken joined Sol Invictus, who went on to play with Arcana in Autumn 2008; whereupon a friendship was formed between the two bands which led to Ann-Mari from Arcana offering to sing for Seventh Harmonic a year later.