Working with Gibbs, Perry carried on his recording career but, once again, financial problems caused problems. Perry broke ranks with Gibbs and formed his own label, Upsetter, in 1968. His first single "People Funny Boy", which was an insult directed at Gibbs, sold well with 60,000 copies sold in Jamaica alone. It is notable for its innovative use of a sample (a crying baby) as well as a fast, chugging beat that would soon become identifiable as "reggae" (the new kind of sound which was given the name "Steppers"). From 1968 until 1972 he worked with his studio band The Upsetters. During the 1970s, Perry released many recordings on a variety of record labels that he founded, and many of his songs were popular in both Jamaica and the UK. He soon became known for his unique production types as well as his mad character.