There is a good probability that the visualization you are thinking of, is already present in our package.
Gallery of 800+ live examples makes it easy to get started with FusionCharts. Just fork the fiddle with the chart you want to make instead of starting from scratch. We have a collection of business dashboards with downloadable source code for inspiration. Use cases included are sales, finance, marketing, manufacturing, healthcare, education, government and IT. Oh! and a music player too!