The Concert (1921)

At 43, renowned pianist Augustus Martinot, attracted to women but with an understanding wife, meets Delphine Hart, the impressionable wife of a physician. In the mutual agreement that they are soulmates, she induces him to take her to his mountain cabin for a weekend. Dr. Hart and Mrs. Martinot follow, and pretending to agree to the exchange of partners they shock Martinot and Delphine into reality. Each couple is reconciled.