A donut chart displays the number of songs per language, with the nine most popular languages shown individually and all remaining languages aggregated into an "Others" slice. Clicking the "Others" slice removes the main chart and shows a zoomed view with all the remaining languages as individual slices. The visualization uses D3 v6's `d3.pie`, `d3.arc`, `d3.scaleOrdinal`, and `d3.schemeTableau10` to generate and color the SVG paths, with tooltips shown on mouseover. Data is loaded from a local `data.json` file, and the chart is built within a Vue.js framework.