Marcel Janco (German: [maɐ̯ˈsɛl ˈjaŋko], French: [maʁsɛl ʒɑ̃ko], common rendition of the Romanian name Marcel Hermann Iancupronounced [marˈt͡ʃel ˈherman ˈjaŋku], last name also Ianco, Janko or Jancu; May 24, 1895 – April 21, 1984) was a Romanian and Israeli visual artist, architect, art theorist and cultural promoter, known as the co-inventor of Dadaism and a leading exponent of Constructivism in Eastern Europe. His first contribution came in the 1910s, when he joined up with poets Tristan Tzara and Ion Vinea on the Romanian art magazine Simbolul. Janco's debut was in Art Nouveau, but he later found his way into Futurism and Expressionism, before creating the visual context and stagecraft to Tzara's literary Dadaism. He parted in frustration during 1919, when he and painter Hans Arp founded a Constructivist circle, Das Neue Leben. Later, Janco and Vinea became editors of Contimporanul, one of the most firmly established magazines of the Romanian avant-garde, where Janco first publicized his vision of a new and improved urban planning. Having helped configure Contimporanul's agenda into a mix of Constructivism, Futurism and Cubism, Janco designed and built some of the most innovative 20th-century landmarks of downtown Bucharest, and envisioned a "revolution" in the city's development. His other work of the time covered a wide range of media, from illustration to sculpture and from interior design to oil painting.

Viking Eggeling (21 October 1880, Lund – 19 May 1925, Berlin) was a Swedish artist and filmmaker. His work is of significance in the area of experimental film, and has been described as absolute film and Visual Music.

At the age of sixteen, the orphaned Eggeling moved to Germany to pursue an artistic career. He studied art history in Milan from 1901 to 1907, supporting himself with work as a bookkeeper. He lived in Paris from 1911 to 1915; he was acquainted with Amedeo Modigliani, Hans Arp, and other artists of the time.

In Zurich in 1918, he was introduced to Hans Richter by Tristan Tzara. Richter wrote that "The contrast between us, which was that between method and spontaneity, only served to strengthen our mutual attraction...for three years we marched side by side, although we fought on separate fronts." In 1920 they began experimenting with film. In collaboration with Erna Niemeyer, Eggeling made a film called Symphonie Diagonale, which was completed in 1924 and first exhibited in May 1925, just before his death.