This interactive line chart visualizes the average monthly Spotify listeners of top artists grouped by their debut year, using data from a CSV file. The D3.js v7 visualization renders an SVG with a monotone X-curved line, axillary scales, and labeled axes on a dark-themed interface. Hovering over each plotted point reveals a tooltip with the specific year and average listener count. Smooth animation is not present, but the chart leverages D3's scaling, axis, and selection APIs for static exploration.