Emo is a subgenre of hardcore punk music. Use of the term (and which musicians should be so classified) has been the subject of much debate.
In its original incarnation, the term "emo" was used to describe the music of the mid-1980s DC scene and its associated bands. In later years, the term "emocore", short for "emotional hardcore", was also used to describe the DC scene and some of the regional scenes that spawned from it. The term "emo" was derived from the fact that, on occasion, members of a band would become spontaneously and literally emotional during performances. The most recognizable names of the period included Rites of Spring, Embrace, One Last Wish, Beefeater, Grey Matter, Fire Party and slightly later, Moss Icon. The first wave of emo began to fade after the breakups of most of the involved bands in the early 1990s.