I will turn my heart to stone (1968)

In a mountain village, a dying woman reveals a secret to the priest and entrusts him with her two children, Dimitrakis and Annoula. Growing up, Dimitris leaves for Athens, finds a job, and shortly after, Anna arrives. He falls in love with Betty, while Stefanos is interested in Anna. Stefanos helps Dimitris to become a singer, but the revelation that the two children are not siblings, as Anna is the daughter of Mr. Pantelis, overturns everything and gives them the right to be together.