Analysis of rhythmic variance is a way of looking at a pattern of sound, like a piece of music, and seeing how much the rhythm changes over time. It can help us to understand and appreciate how a piece of music evokes different kinds of feelings. To do this, we break down the piece into short chunks and measure how different they are from each other. When the rhythm stays the same, the music sounds predictable and boring, but when the rhythm changes, it can sound exciting and interesting.