Pop music originated in the 1920s to describe short, simple love songs with popular appeal. In the 1950s, the term "pop music" emerged in Britain to describe softer music played on new television programs, helping pop stars gain popularity. Over the 20th century, pop music evolved through various decades as new styles like disco and dance emerged and faded, with pop in the 2000s spreading more globally through digital music. Pop music has primarily targeted and been marketed to preteens and teenagers, especially girls aged 16-21, through artists they can relate to.