Information: - Progressive rock (shortened as "prog"; sometimes "art rock", "classical rock" or "symphonic rock") is a broad subgenre of rock music that developed in the United Kingdom and United States throughout the mid to late 1960s. Initially termed "progressive pop", the style was an outgrowth of psychedelic bands who abandoned standard pop traditions in favour of instrumentation and compositional techniques more frequently associated with jazz, folk or classical music. Additional elements contributed to its "progressive" label: lyrics were more poetic, technology was harnessed for new sounds, music approached the condition of "art", and the studio, rather than the stage, became the focus of musical activity, which often involved creating music for listening, not dancing. - Songs from the Wood is the tenth studio album by British progressive rock band Jethro Tull, released February 1977. The album signalled a new direction for the band, who turned to celebrating British pagan folklore and the countryside life in a wide-ranging folk rock style which combined traditional instruments and melodies with hard rock drums and electric guitars. - Heavy Horses is the eleventh studio album by British progressive rock band Jethro Tull, released on 10 April 1978. It is considered the second album in a trilogy of folk-rock albums by Jethro Tull, although folk music's influence is evident on a great number of Jethro Tull releases. The album abandons much of the folk lyrical content typical of the previous studio album, "Songs from the Wood" (1977), in exchange for a more realist perspective on the changing world - as a clear mention to the title track, the album is dedicated to the "indigenous working ponies and horses of Great Britain". Likewise, the band sound is harder and tighter. The third album in the folk-rock trilogy is "Stormwatch" (1979). - Bursting Out is a 1978 live album by the rock band Jethro Tull . It was recorded at various locations during the European Heavy Horses tour in May and June 1978 . Though the specific recording dates and locations are not credited , the liner notes and stage introduction indicate that at least some tracks were recorded at the Bern Festhalle in Switzerland , on 25 May 1978 . A spelling error on the spine of the first US LP pressing listed the title as '' Busting Out '' . Though released as a double - disc CD in the United Kingdom and in the rest of Europe , the original CD release in the United States was only one disc , with three tracks ( '' Quatrain '' , '' Sweet Dream '' and '' Conundrum '' ) omitted to fit the 80 minutes CD length , while the double - disc 1990 CD version in the United Kingdom ( and Europe ) incorporated the first track for both discs ( the Introductions ) in the song that follows . In 2004 , the complete album was released worldwide as a two - disc set with the Introductions as separate tracks . What is the relationship between 'bursting out' and 'stormwatch'?
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followed by