"비가 오면" is a popular Korean song by 이문세, released in 1984. The title translates to "When It Rains," and the song expresses feelings of nostalgia and longing that arise during rainy days. The lyrics evoke memories and emotions tied to past relationships, making it relatable to many listeners. The song's melody is soft and soothing, often associated with the calming sound of rain. It has become a classic in Korean music, frequently played during rainy weather. "비가 오면" continues to resonate with audiences, highlighting the universal themes of love and memory.