with the experimental music of himself and other musicians. The sounds recorded by any device, and then transferred to digital format, are used by some musicians through their performance with MIDI-interfaced instruments. A contemporary artist with great success for his compositions is Christian Fennesz. Earlier innovators who are noted for the importance and boldness of their projects are Luigi Russolo, who, in 1913, with his manifesto, L'arte dei rumori (The Art of Noises), gave musical value to environmental noise. He also designed and built the Intonarumori—the first instruments for making noise. Francesco Balilla Pratella utilized the Intonarumori in his opera, L'aviatore Dro, which was written in close collaboration with Filippo Tommaso Marinetti, (the founder of the Futurist movement). Radio documentary Radio documentaries often use recordings from the field, e.g., a locomotive engine running, for evocative effect. This type of sound functions as the non-fictional counterpart to the sound effect. Politics During the early years of commercial recordings, the speeches of politicians sold well, since few people had radios. The HMV ("His Master's Voice") catalogue for 1914–1918 lists over a dozen such records. Probably the last time such records sold well was in 1965, when the LP, The Voice of Churchill, reached number 7 in the UK album charts. This was immediately after Churchill's death. See also Biomusic Lowercase The Freesound Project Sound art Soundscape Sound map References External links Early history Phonography.org Sound Transit Audio engineering Data collection in research Field recording Hobbies Sound recording