Panic! at the Disco in the context of "Emo pop"

Emo (/ˈiːmoʊ/ EE-moh) is a genre of rock music that combines musical characteristics of hardcore punk with emotional, often confessional lyrics. It emerged as a style of hardcore punk and post-hardcore from the mid-1980s Washington, D.C., hardcore scene, where it was known as emotional hardcore or emocore. The bands Rites of Spring and Embrace, among others, pioneered the genre. In the early-to-mid 1990s, emo was adopted and reinvented by alternative rock, indie rock, punk rock, and pop-punk bands, including Sunny Day Real Estate, Jawbreaker, Cap'n Jazz, Mineral, and Jimmy Eat World. By the mid-1990s, Braid, the Promise Ring, American Football, and the Get Up Kids emerged from Midwest emo, and several independent record labels began to specialize in the genre. Meanwhile, screamo, a more aggressive style of emo using screamed vocals, also emerged, pioneered by the San Diego bands Heroin and Antioch Arrow. Screamo achieved mainstream success in the 2000s with bands like Hawthorne Heights, Silverstein, Story of the Year, Thursday, the Used, and Underoath.

The emo subculture signifies a specific relationship between fans and artists and certain aspects of fashion, culture, and behavior. Emo fashion includes skinny jeans, black eyeliner, tight t-shirts with band names, studded belts, and flat, straight, jet-black hair with long bangs. Since the early-to-mid 2000s, fans of emo music who dress like this are referred to as "emo kids" or "emos". The emo subculture was stereotypically associated with social alienation, sensitivity, misanthropy, introversion, and angst. Purported links to depression, self-harm, and suicide, combined with its rise in popularity in the early 2000s, inspired a backlash against emo, with some bands, including My Chemical Romance and Panic! at the Disco, rejecting the emo label because of the social stigma and controversy surrounding it. There has long been controversy over which bands are labeled "emo", especially for bands that started outside traditional emo scenes; a viral website, Is This Band Emo?, was created to address one fan's opinion on this question. Emo and its subgenre emo pop entered mainstream culture in the early 2000s with the success of Jimmy Eat World and Dashboard Confessional, and many artists signed contracts with major record labels. Bands such as My Chemical Romance, AFI, Fall Out Boy, and the Red Jumpsuit Apparatus continued the genre's popularity during the rest of the decade.