L.H.O.O.Q. and wrote "Moustache par Picabia / barbiche par Marcel Duchamp / avril 1942". As was the case with a number of his readymades, Duchamp made multiple versions of "L.H.O.O.Q." of differing sizes and in different media throughout his career, one of which, an unmodified black and white reproduction of the "Mona Lisa" mounted on card, is called "L.H.O.O.Q. Shaved". The masculinized female introduces the theme of gender reversal, which was popular with Duchamp, who adopted his own female pseudonym, Rrose Sélavy, pronounced "Eros, c'est la vie" ("Eros, that's life"). Primary responses to "L.H.O.O.Q." interpreted its meaning as being an attack
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