Tomorrow, in a Year is the studio version of the music commissioned by the Danish performance group Hotel Pro Forma for its opera based on Charles Darwin's On the Origin of Species.

These are often without context, though the meaning of some songs is clear, for example 'Seeds' refers to Darwin's experiments to determine why certain plants are found on the coasts of many continents, despite their separation, in which he demonstrated that seeds of some plants remain viable after weeks in cold seawater, and 'Annie's Box' refers to the pivotal moment when Darwin's daughter Annie died of tuberculosis, which damaged his Christian faith, helping him to overcome his fears about the church's reaction to On the Origin of Species.

The music appears to have been composed to reflect the long arc of evolution, with the first songs having a hard, noisy and simple quality, subsequent tracks building in beauty and complexity, and incorporating progressively more lyrics and musical sounds based on animal vocalisations.

Tomorrow, In a Year features guest appearances by mezzo-soprano Kristina Wahlin, Danish actress Lærke Winther Andersen and Swedish pop artist Jonathan Johansson.

[31] The opera was rated 3/5 by the Guardian, with the reviewer criticising the harsh sound of the first several tracks, the very gradual introduction of vocals and the contextless way in which Darwin's writing was generally presented.