Country pop (also known as pop country) is a fusion genre of country music and pop music that was developed by members of the country genre out of a desire to reach a larger, mainstream audience. By producing country songs that employed many styles and sounds found in pop music, the country music industry was effective in gaining new listeners without alienating its traditional country audience. Country pop music is often known for genres like rock, pop, and country combined. It is a continuation of similar efforts that began in the late 1950s originally known as Nashville sound and later on Countrypolitan. By the mid-1970s, many country artists were transitioning to the pop-country sound which led to some records charting high on mainstream top 40 as well as country Billboard charts.