Fairport Convention are a British folk rock band. Formed in 1967, they are widely regarded as a key group in the English folk rock movement. Their seminal album Liege & Lief is considered to have launched the British folk rock movement, which provided a distinctively English identity to rock music and helped awaken much wider interest in traditional music in general. The band have drawn heavily on the Child Ballads, songs of the British Isles from the later medieval period until the 19th century.

Fairport Convention were soon playing regularly at underground venues such as UFO and The Electric Garden, which later became the Middle Earth club. After only a few months, they caught the attention of manager Joe Boyd who secured them a contract with Polydor Records. Boyd suggested they augment the line-up with another male vocalist. Singer Iain Matthews (then known as Ian MacDonald) joined the band and their first album, Fairport Convention, was recorded in late 1967 and released in June 1968. At this early stage Fairport looked to North American folk and folk rock acts such as Joni Mitchell, Bob Dylan, and The Byrds for material and inspiration. The name "Fairport Convention" and the use of two lead vocalists led many new listeners to believe that they were an American act, earning them the nickname 'the British Jefferson Airplane' during this period. Fairport Convention played alongside Jefferson Airplane at the First Isle of Wight Festival, 1968. After disappointing album sales they signed a new contract with Island Records. Before their next recording Judy Dyble was replaced by the band with Sandy Denny, a folk singer who had previously recorded as a soloist and with Strawbs. Denny's distinctive voice, described by Clive James as 'open space, low-volume, high-intensity', is one of the characteristics of two albums released in 1969: What We Did on Our Holidays and Unhalfbricking. These recordings marked the growth of much greater musicality and song-writing ability among the band. The first of these featured the Thompson-penned "Meet on the Ledge", which became their second single and eventually the band's unofficial anthem. During the recording of Unhalfbricking, Matthews left after having sung on only one song, eventually to form Matthews Southern Comfort. He was not replaced; the other male members covered his vocal parts. The album featured a guest appearance by Birmingham folk fiddler Dave Swarbrick on a recording of "A Sailor's Life", a traditional song brought to the band by Denny from her folk club days. The recording of this track marked an important turning point for the band, sparking an interest in traditional music in Ashley Hutchings that led him to detailed research in the English Folk Dance and Song Society Library at Cecil Sharp House; this theme would become the basis for their next, much more ambitious, recording project. These two albums began to gain the band wider recognition. Radio DJ John Peel championed their music, playing their albums on his influential BBC shows. Peel also recorded a number of sessions which were later released as the album Heyday (1987). They enjoyed some mainstream success when they entered the singles charts with "Si Tu Dois Partir", a French-language version of Bob Dylan's "If You Gotta Go, Go Now". The record just missed the top twenty, but secured the band a slot on Top of the Pops, Britain's most popular television pop music programme at the time. In 1969 four members of the band, one uncredited and three with pseudonyms, featured as backing musicians on the album Love Chronicles by Scottish folk artist Al Stewart. CANNOTANSWER

Answer the following question by taking a quote from the article: were they successful

After disappointing album sales