The Hollies are an English pop group from Manchester formed in the early 1960s. Known for their distinctive vocal harmony style (which influenced many other groups) they became one of the leading British groups of the era, and they enjoyed considerable popularity in many other countries although they did not achieve major US chart success until 1966. Like the Rolling Stones and Steeleye Span, they are also notable as one of the few British pop groups of the 1960s that has never officially broken up and which continues to record and perform to the present.