Oswego was formed in Washington, D.C. in 1999 by Erik Denno (Kerosene 454), Darren Zentek (Donora, Glendale, Kerosene 454), Chris Turco (Kukim), and Mike Markarian (Vita Bruno), and was later joined by Ryan Nelson (The Most Secret Method) and Vin Novara (1.6 Band, The Crownhate Ruin). They played shows around the D.C./Baltimore area from 1999 to 2001, at venues such as Galaxy Hut, Black Cat, Fort Reno, Velvet Lounge, Kansas Street House, and Ottobar, with bands such as Burning Airlines, Dismemberment Plan, Victory at Sea, The Up On In, and Juno. The group recorded with producer J. Robbins in 2000 at Inner Ear Studio in Arlington, Virginia, and Salad Days Studio in Washington, D.C. The songs were released on the Spanish label BCore Disc as the Just Getting Warmed Up EP in 2000, and an eponymous full-length Oswego CD in 2002. After Oswego disbanded, members of the group went on to play with other musical projects such as Report Suspicious Activity, Channels, Brandon Butler, Rancho Notorious, Dead Teenagers, The Perfect Souvenir, Trans Am, Pines of Nowhere, Scene Creamers, Beauty Pill, Routineers, Soccer Team, Office of Future Plans, Numbers Station, Geezer, Chron Turbine, Yes Vacancy, Minutes, Alarms and Controls, and Continuals. In 2016, a compilation of Oswego's released and unreleased music was remixed by J. Robbins at Magpie Cage Studio in Baltimore, remastered by Dan Coutant at Sun Room Audio, and released as a self-titled double LP by the German label Arctic Rodeo.