Eme [EarthMoon Earth] is a project by Daniela de Paulis consisting on the transmission of different media to the moon with the help of a radiotelescope. The echoes of this transmissions are listened by radio amateurs and sent to a performance room.
Enrique Tomás was invited to compose seven short pieces of sound for being sent to the moon. Each one thought as a soundtrack of one of the seven colours. These are the ideas of the composer:

Linz, May 2010

Hello Daniela,

now that I am finishing the production of my sound works for the EME project, I would like to send you some lines for the presentation and for the application that you are preparing.

At least for me, not having absolute hearing or synaesthetic condition, if light has colours then sound possesses tonality, being it musical or not. For each one of Newton´s colours I have composed a short work based on the tonal intervals of our Western´s musical scale. The structural principle is the sequence of notes, arranged in a way that produces a total neutral harmony. Then, each piece uses a different sequences evoking a new sound tonality. Over this basic principle I have included some sound artifacts (or tonality artifacts) for extending timbre and rhythm. All these seven parts of the composition don´t have a defined starting or ending point, we just perceive them during a particular window of time, being conceptually infinite in duration.

From another point of view, the particular specifications of the project, with a maximum length of each piece of 72 seconds, a reduced spectrum between 400 and 2800 Hz and a monoaural playback were an important constraint. Also I took into account the fact that my audios will be distorted due to the transmission through the atmosphere, the vacuum space and the reflection on the surface of the moon. My objective then became the creation of an audio playground for artifacts, both natural and artificial, playing together over an infinite sequence of notes layer.