Luigi Russolo (30 April 1883 – 4 February 1947) was an Italian Futurist painter and composer, and the author of the manifesto The Art of Noises (1913). He is often regarded as one of the first noise music experimental composers with his performances of "noise concerts" in 1913–14 and then again after World War I, notably in Paris in 1921.

Luigi Russolo was perhaps the first noise artist. His 1913 manifesto, L'Arte dei Rumori, translated as The Art of Noises, stated that the industrial revolution had given modern men a greater capacity to appreciate more complex sounds. Russolo found traditional melodic music confining and envisioned noise music as its future replacement.

The Art of Noises classified "noise-sound" into six groups:

He designed and constructed a number of noise-generating devices called Intonarumori and assembled a noise orchestra to perform with them. A performance of his Gran Concerto Futuristico (1917) was met with strong disapproval and violence from the audience, as Russolo himself had predicted. None of his intoning devices have survived, though recently some have been reconstructed and used in performances. Although Russolo's works bear little resemblance to modern noise music, his pioneering creations cannot be overlooked as an essential stage in the evolution of the several genres in this category, and many artists are now familiar with his manifesto.

Luigi (ルイージ, Ruīji^?) is a fictional character, featured in video games and related media released by Nintendo. Created by prominent game designer Shigeru Miyamoto, Luigi is portrayed as the slightly younger fraternal twin brother of Nintendo's mascot Mario, and appears in many games throughout the Mario series, frequently as a sidekick to his brother and the deuteragonist of the series.

Luigi first appeared in the 1983 arcade game Mario Bros. as the character controlled by the second player, and retained this role in Super Mario Bros., Super Mario Bros. 3, Super Mario World, and other titles. The first game where he was available as a primary character was Super Mario Bros. 2. In more recent appearances, Luigi's role became increasingly restricted to spinoffs such as the Mario Party and Mario Kart series, though he has been featured in a starring role on two occasions: first in the 1991 educational game Mario is Missing, later in Luigi's Mansion for the Nintendo GameCube in 2001 and in Luigi's Mansion 2 for the 3DS. In both of these games, he is called upon to act as the hero because Mario, the usual hero within the franchise, is in need of rescue. Luigi has also appeared in every episode of the three DiC TV series based on the Nintendo Entertainment System and Super Nintendo Entertainment System games.