Music Industry Data Formerly known as Academic Charts Online, Music Industry Data is a growing repository of historical and current data which facilitates research into Popular Music by offering chart data for international pop music albums and singles (under exclusive academic licence from Billboard, Official Chart Company, GfK Entertainment and over 30 countries around the world). Sophisticated tools allow you to interpret, graph, analyse, compare and contrast musical trends and interactions at the touch of a button. Listen to audio samples for each track and album quickly and easily.