Readymades of Marcel Duchamp to turn up any identical matches to photographs of the originals. However, there are accounts of Walter Arensberg and Joseph Stella being with Duchamp when he purchased the original "Fountain" at J. L. Mott Iron Works. Such investigations are hampered by the fact that few of the original "readymades" survive, having been lost or destroyed. Those that still exist are predominantly reproductions authorized or designed by Duchamp in the final two decades of his life. Shearer also asserts that the artwork "L.H.O.O.Q." which is recorded to be a poster-copy of the "Mona Lisa" with a moustache drawn on it, is
Marcel Duchamp of numbered balls. These pieces predate John Cage's "Music of Changes" (1951), which is often considered the first modern piece to be conceived largely through random procedures. In 1968, Duchamp and John Cage appeared together at a concert entitled "Reunion", playing a game of chess and composing Aleatoric music by triggering a series of photoelectric cells underneath the chessboard. "Rrose Sélavy", also spelled Rose Sélavy, was one of Duchamp's pseudonyms. The name, a pun, sounds like the French phrase "Eros, c'est la vie", which may be translated as "Eros, such is life." It has also been read as "arroser la