Title: A Waltz by Strauss (1925 film)
Content:  A Waltz by Strauss (German: Ein Walzer von Strauß) is a 1925 Austrian silent film directed by Max Neufeld and starring Eugen Neufeld, Tessy Harrison, and Svet Petrovich. The film's sets were designed by the art director Julius von Borsody.
Title: Spring on Ice
Content:  Spring on Ice (German: Frühling auf dem Eis) is a 1951 Austrian musical comedy film directed by Georg Jacoby and starring Eva Pawlik, Herta Mayen and Hans Holt. It is set around the Vienna Ice Revue. The film was shot using Agfacolor at the Soviet-controlled Rosenhügel Studios in Vienna. The film's sets were designed by the art director Julius von Borsody.
Title: The Waltz King (film)
Content:  The Waltz King (German: Der Walzerkönig) is a 1930 German historical film directed by Manfred Noa and starring Hans Stüwe, Claire Rommer and Fred Louis Lerch. It portrays the nineteenth century composer Johann Strauss II. The film's sets were designed by the art director Max Heilbronner.
Title: Waltz of Love
Content:  Waltz of Love (German: Liebeswalzer) is a 1930 German musical film directed by Wilhelm Thiele and starring Lilian Harvey, Willy Fritsch and Georg Alexander. It premiered at the Gloria-Palast in Berlin on 7 February 1930. A separate English language version The Love Waltz was also produced.
Title: Spring Symphony (film)
Content:  Spring Symphony (Frühlingssinfonie) is a 1983 West German historical drama film directed by Peter Schamoni and starring Nastassja Kinski, Herbert Grönemeyer, and Rolf Hoppe. It portrays the life of the pianist Clara Wieck and her relationship with the composer Robert Schumann. The film's sets were designed by the art director Alfred Hirschmeier. It was shot at the Tempelhof Studios in Berlin and on location in various places in Saxony including Dresden, Leipzig and Zwickau.
Title: A Waltz by Strauss (1931 film)
Content:  A Waltz by Strauss or As Long as Strauss Waltzes are Heard (German: So lang' noch ein Walzer vom Strauß erklingt) is a 1931 German historical musical film directed by Conrad Wiene and starring Hans Junkermann, Gustav Fröhlich and Julia Serda. In the United Kingdom it was released as Johann Strauss. The film's sets were designed by the art director Willy Schiller. It was shot at the Johannisthal Studios in Berlin.
Title: Waltz War
Content:  Waltz War (German: Walzerkrieg) is a 1933 German biographical film directed by Ludwig Berger and starring Renate Müller, Willy Fritsch and Paul Hörbiger. It depicts the life of the Austrian ballet dancer Katti Lanner who eventually settled in Victorian Britain. It is also known by the alternative title of The Battle of the Walzes. The film was made by the largest German studio UFA, with sets designed by Robert Herlth and Walter Röhrig. A separate French-language version Court Waltzes was also directed by Berger.
Title: Rudi Spring
Content:  a film Die Kochsche Schneeflocke, directed by Norbert Wartig (born 1973), produced by LNW Film. In 2005, Spring was awarded the fellowship of the Villa Massimo in Rome. In 2008 two of his songs appeared on a CD of Salome Kammer, together with music of Cole Porter, Luciano Berio, and Alban Berg, among others. In 2009 he accompanied Salome Kammer at the Rheingau Musik Festival in songs and Chansons of the 1920s to 1940s. He played the piano in a trio concert at the Gasteig, with Jens Josef (flute) and Graham Waterhouse (cello), performing Martinů's trio and the premiere of the flute version of Gestural Variations; every composer contributed a Christmas carol, with Spring setting Maria durch ein Dornwald ging.
Title: Rustle of Spring (film)
Content:  Rustle of Spring (German: Frühlingsrauschen) is a 1929 German silent romance film directed by William Dieterle and starring Dieterle, Lien Deyers and Julius Brandt. It was made by the German subsidiary of Universal Pictures. The film's sets were designed by the art directors Otto Guelstorff and Ernst Stern.
Title: Waltz Time (1933 film)
Content:  Waltz Time is a 1933 British musical film directed by Wilhelm Thiele and starring Evelyn Laye, Fritz Schulz and Gina Malo. It is an adaptation of the operetta Die Fledermaus by Johann Strauss II and Richard Genée. It was made at the Lime Grove Studios. The film's sets were designed by Alfred Junge.

Question: Who was the director of Spring Waltz?
Answer: Yoon Seok-Ho.