Billboard.com updates its Hot Country Songs chart, which features the top 25 country songs, weekly. Another genre-specific website, Taste of Country, publishes a monthly list of the top 40 country songs.
The Billboard charts rank songs based on several factors including radio airplay, digital and physical music sales, and data from music streaming services. Charts include cumulative lists of all genres as well as individual lists for several popular categories of music. Independent companies such as iTunes, Spotify and Shazam also compile top music charts based on individual plays and sales. These charts often provide varying ranks of songs, but the individual songs featured remain fairly constant.