This streamgraph visualizes the changing revenue of music formats in the US from 1973 to 2019, using data from the RIAA. The chart, built with React and D3.js, stacks area layers for formats like CD, Cassette, and Streaming, with automatic label placement via `d3-area-label`. The visualization applies a blur to the data before stacking with a wiggle offset, and employs `d3.scaleTime`, `d3.scaleLinear`, and `d3.scaleOrdinal` for scales. An x-axis with grid lines is rendered using `d3.axisBottom`.