The following year, Wyschnegradsky and his family moved to Paris. The Pleyel house manufactured a pneumatic-transmission piano for him, but he was not entirely satisfied (1921). Wyschnegrasky wished to build a "true" quarter-tone piano and thought that he would only be able to in Germany. He ordered a Möllendorf-type quarter-tone harmonium from Straube. In 1922 and 1923, he went to several revivals in Germany where he met R. Stein, Alois Hába, J. Mager and W. Möllendorf. The following year, he married Hélène Benois and fathered a son, Dimitri (1924, later Dimitri Vicheney, who used the pen-name Jacques Demêtre). Wyschnegradsky and Benois divorced in 1926.