Two Hearts in Waltz Time (Original title: Zwei Herzen im ¾ Takt or Zwei Herzen im Dreivierteltakt, literally Two Hearts in ¾ Time) is a 1930 German film directed by Géza von Bolváry and starring Irene Eisinger, Walter Janssen, Oskar Karlweis, Willi Forst, Gretl Theimer, and S.Z.

Nicki and Vicki, two librettists who also happen to be brothers, are presently in collaboration with composer Toni.

All too aware of Toni's amorous escapades, Nicki and Vicki try to keep the existence of their pretty sister Hedi a secret.

Suffering from an acute case of writer's block (he has yet to find an inspiration for his next production), Toni throws a huge party, which is boycotted by his friends and associates so that he'll keep his mind on his work.

The only guest who does show up is uninvited Hedi, who turns out to be inspiration enough for ten operettas.