A guess, not an answer. You'll see what everyone else said.
Machine-generated description — written by an image model, not by a person.
Black-and-white beach scene from mid-20th century, likely 1950s–1960s. Crowded sandy shore with people in swimwear, some seated on blankets, others standing near a makeshift stage. A man in a white shirt and cap directs a group playing a musical instrument. Cliffside and rocky terrain in background.