This area chart shows music industry revenue in million USD per year from 2015 to 2022, highlighting a general upward trend. The visualization uses D3 v7’s `d3.area`, `d3.line`, and `d3.curveMonotoneX` generators to render a gradient-filled area and a stroked line over a time-series axis built with `d3.scaleTime`. Data is loaded asynchronously from a raw GitHub CSV via `d3.csv`, with hover tooltips on the circular marks triggered through SVG mouse events.