Algernon Cadwallader was an American emo band from Philadelphia, Pennsylvania, known for their energetic and intricate guitar work, impassioned vocals, and the revival of the '90s emo and math rock sound. Their music is often recognized for its honest and introspective lyrics, combined with an exuberant, DIY spirit that harks back to the roots of the indie emo movement. The band was formed in 2005 and quickly became a beloved fixture in the underground emo scene, with their musical style frequently compared to that of pioneering midwestern emo bands such as Cap'n Jazz.

Over the course of their active years before their disbandment in 2012, the group released a series of works that further cemented their influence on the modern emo landscape. "Some Kind of Cadwallader" (2008) served as their debut full-length album, establishing their signature balance of raw emotion and technical prowess. This was followed by "Fun" (2009), an EP that continued to showcase their ability to blend catchy hooks with complex melodies. The band's final album, "Parrot Flies" (2011), presented a matured sound that built upon their earlier work with even more refined songwriting and dynamic structures. Throughout their career, Algernon Cadwallader maintained a tight-knit following and remained a touchstone for fans of the genre, with their self-titled compilation "Algernon Cadwallader" released posthumously in 2018 along with a reissue of their "Demo," exemplifying their lasting impact on the scene.