From TEA FM (Zaragoza, ES). "time_sound_machine_broadcast." The historical memory of human race is based on records. The cave paintings, Etruscan reliefs, Roman mosaics, the first printing ... All these records were visual, touchables. This program collects ten moments of human history which reflects the importance of sound and elements that reinforce its communication power. But just as the perception of a painting environment changes depending on where it is observed, in the light of external factors to it, the message conveyed sound varies accompanying interference. Let's look at these companions more than the message itself. We'll be surprised what we can hear if we pay enough attention. It is not until the second half of the nineteenth century when the first sound recording is made. Édouard-Léon Scott de Martinville patented in 1857 the phonautograph, considered the first device capable of recording sound in a visible support. In this radiodocumental we can hear the first known recording that has come down to us is 1860, Au Clair de la Lune. But the first sound recordings of graphophone, the first intercontinental phone call, sound captures from voices born before 1800 ... A trip uploaded to our time machine to travel the sound recordings that have marked the last two hundred years of our history. Una producciÛn de la Escuela Creativa de Radio TEA FM para RADIA. www.teafm.net