

Groups such as Saccharine Trust, Naked Raygun, and The Effigies, which were active around the early 1980s, are considered to be forerunners to the post-hardcore genre. During the early 2000s it became common for mainstream “melodic” post-hardcore bands to crossover into other related genres like Melodic hardcore, Heavy hardcore, indie rock, screamo, and emo, straddling experimentation and accessibility. It has also been noted that since some post-hardcore bands included members that were rooted in the beginnings of hardcore punk, some of them were able to expand their sound as they became more skilled musicians. As the genre progressed, some of these groups also experimented with a wide array of influences, including soul, dub, funk, jazz, and dance-punk.


Jeff Terich of Treblezine stated, "Instead of sticking to hardcore's rigid constraints, these artists expanded beyond power chords and gang vocals, incorporating more creative outlets for punk rock energy." British post-punk of the late 1970s and early 1980s has been seen as influential on the musical development of post-hardcore bands. Additionally, many of these bands' vocalists were just as likely to deliver their lyrics with a whispered croon as they were a maniacal yelp." Allmusic also claims that post-hardcore bands find creative ways to build and release tension rather than "airing their dirty laundry in short, sharp, frenetic bursts". Music database AllMusic stated "These newer bands, termed post-hardcore, often found complex and dynamic ways of blowing off steam that generally went outside the strict hardcore realm of 'loud fast rules'. Hardcore punk typically features very fast tempos, loud volume, and heavy bass levels, as well as a "do-it-yourself" ethic. Meanwhile, bands like Title Fight and La Dispute experienced underground popularity playing music that bore a closer resemblance to the post-hardcore bands of the 1980s and 1990s. In the 2010s, bands like Sleeping with Sirens and Pierce the Veil achieved mainstream success under the post-hardcore label. In the early- and mid-2000s, post-hardcore achieved mainstream success with the popularity of bands like At the Drive-In, My Chemical Romance, Dance Gavin Dance, AFI, Underoath, Hawthorne Heights, Silverstein, The Used, Saosin, Alexisonfire, and Senses Fail. The genre also began to incorporate more dense, complex, and atmospheric instrumentals with bands like Slint and Unwound, and also experienced some crossover from indie rock with bands like The Dismemberment Plan. Dischord Records became a major nexus of post-hardcore during this period. as well as groups such as Big Black, Jawbox, Quicksand, and Shellac that stuck closer to post-hardcore's noise rock roots. The genre expanded in the 1980s and 1990s with releases by bands from cities that had established hardcore scenes, such as Fugazi from Washington, D.C. Post-hardcore began in the 1980s with bands like Hüsker Dü and Minutemen. Like the term "post-punk", the term "post-hardcore" has been applied to a broad constellation of groups. It was initially inspired by post-punk and noise rock. Post-hardcore is a punk rock music genre that maintains the aggression and intensity of hardcore punk but emphasizes a greater degree of creative expression.
