A song is a set of lyrics and music, sung or rapped. Depending on the genre, it may be a pop hit that is centered around a catchy chorus, or it could be a folk, traditional, or rap song that tells a story over several verses. Songs can be a blend of multiple genres too, such as jazz or dance music.
Lyrical complexity and emotion are also important factors in the popularity of a song. A recent study published in Scientific Reports found that complex lyrics have been decreasing over time, while lyrics expressing emotions like anger or disgust have been increasing.
Most songs begin with a pre-chorus section that sets the mood for what is to come. It might be as simple as an instrumental bar or two that is repeated to build up anticipation for the chorus, or it could be a more complete musical change that introduces variation and contrast. The song “Video Games” by Lana Del Rey is an example of the latter, featuring a bridge section that contains different lyrics from the chorus while starting on a chord progression that is a departure from what is used in the verses and choruses.
A chorus is a recurring section of a song that usually contains the title and main lyrical hook. Choruses can be the focal point of a song, with its melody and rhythm being prominently featured in media and commercials. However, songs with a more lyrical focus often rely on a progression of verses, such as the famous “Smells Like Teen Spirit” from Nirvana.