A line chart displays music revenue in million USD per year from 2015 to 2022. Data comes from a remote CSV file loaded with `d3.csv` and `d3.autoType`. The visualization uses `d3.scaleTime` and `d3.scaleLinear` for axes, a `d3.line` generator with `d3.curveMonotoneX` for smoothing, and `d3.axisBottom`/`d3.axisLeft` for ticks. Interactive circles show tooltips on `mouseenter`, `mousemove`, and `mouseleave` events. The chart renders as SVG with gridlines and axis labels in a fixed 750×420 viewport.