Interlude is a 1957 American film directed by Douglas Sirk and starring June Allyson, Rossano Brazzi, Marianne Koch, Franoise Rosay.
New boss Prue Stubbins introduces her to symphony conductor Tonio Tony Fischer, then, concerned about the upcoming performance, asks Helen to follow him when he abruptly leaves the concert hall. At the estate of a countess, Irena Reinhart, she finds Tony playing piano for a woman, Reni, unaware it is his wife.Tony is distraught because Reni is mentally ill, given no chance to improve. He becomes attracted to the American woman and invites her to accompany him to Salzburg, Austria for a day, which leads to a few intimate hours together. She is later furious after discovering he is a married man. ........
Source: Wikipedia