Billboard is a weekly music magazine aimed at readers between ages 25-54, most of whom are college graduates. It features charts tracking the most popular songs and albums. The front covers typically feature a prominent male or female artist, and the magazine layout remains consistent with only the images and contents changing between issues. Billboard was founded in 1894 and originally covered bill posting but expanded to music in the 1930s when it began publishing music charts. It is now an international publication focused on the global music industry.