This interactive histogram explores a Spotify tracks dataset, showing the distribution of a selected audio feature (such as popularity or energy) across user-defined bins. A dropdown menu switches the mode between absolute counts and percentages, while another controls the number of histogram sections. Built with D3 v5, the visualization uses `scaleBand` and `scaleLinear` for axes, and animated bar transitions via `transition().duration()` and `delay()` to reveal each segment sequentially, set against a radial gradient background.