This stacked bar chart shows the distribution of top song genres by popularity, with dance pop consistently dominating each year. Using the Vega-Lite API and d3.csv, it aggregates Spotify track data from a gist source, counting songs per genre for each popularity value. The visualization encodes genre as color, popularity on the x-axis, and song counts on the y-axis, with tooltips revealing exact figures. The config.js file customizes axis labels and styling for improved readability.