By the early 1980s, 2 Tone-influenced ska bands began forming throughout the United States. The Uptones from Berkeley, California and The Toasters from New York City—both formed in 1981 — were among the first active ska bands in North America. They are both credited with laying the groundwork for American ska and establishing scenes in their respective regions. In Los Angeles around the same time, The Untouchables also formed. While many of the early American ska bands continued in the musical traditions set by 2 Tone and the mod revival, bands such as Fishbone, The Mighty Mighty Bosstones and Operation Ivy pioneered the American ska punk subgenre, a fusion of ska and punk rock that typically downplayed ska's R&B influence in favor of faster tempos and guitar distortion.