A pop song is a genre of music that encompasses a wide variety of styles and genres, including pop, rock, electronic, dance, and hip hop. Pop songs are typically characterized by their catchy melodies and simple lyrics, which make them easy to sing along to and remember. Pop songs are often played on the radio, in clubs, and at other public events, and they are often used in movies and TV shows. Some of the most popular pop songs of all time include "Happy Birthday to You," "Thriller," and "Yesterday."