Okay kiddo, chanson réaliste is a kind of music from France that was popular a long time ago, like a hundred years ago! It's all about telling stories with sad or emotional lyrics that make you think and feel things. The singers usually sang in a very dramatic way with lots of expression and emotion. They used instruments like the accordion and the guitar to create a sad and moody feeling. The stories they told were about everyday people and their struggles in life, like love, poverty, and loneliness. Some famous chanson réaliste singers were Edith Piaf and Jacques Brel. It's a type of music that can make you feel a lot of different emotions just by listening to it!