Why is Swing Time considered an important Fred Astaire and Ginger Rogers musical?

Swing Time (1936), directed by George Stevens, is widely considered one of the best collaborative efforts between Fred Astaire and Ginger Rogers. Its status as a classic musical is primarily attributed to its elaborately choreographed dance sequences, which were meticulously planned by Astaire to appear spontaneous, such as the famous "Never Gonna Dance" number.1

The film is also noted for its playful wit and its contribution to the musical genre, having introduced Jerome Kern and Dorothy Fields’ classic song "The Way You Look Tonight," which won an Academy Award. Additionally, the film featured the "Bojangles of Harlem" sequence, an homage to dancer Bill Robinson that earned an Academy Award nomination for dance direction. While the film was part of the successful series of Astaire-Rogers musicals, it stands out for the high level of technical precision and artistic sophistication brought to its musical numbers.12