Progressive rock:Progressive rock bands pushed "rock's technical and compositional boundaries" by going beyond the standard rock or popular verse-chorus-based song structures. Additionally, the arrangements often incorporated elements drawn from classical, jazz, and world music. Instrumentals were common, while songs with lyrics were sometimes conceptual, abstract, or based in fantasy. Progressive rock bands sometimes used "concept albums that made unified statements, usually telling an epic story or tackling a grand overarching theme." Progressive rock developed from late 1960s psychedelic rock, as part of a wide-ranging tendency in rock music of this era to draw inspiration from ever more diverse influences.Progressive metal:Progressive metal (=prog metal) is a subgenre of heavy metal, which blends the powerful, guitar-driven sound of metal with the complex compositional structures, odd time signatures, and intricate instrumental playing of progressive rock. Some progressive metal bands are also influenced by jazz fusion and classical music. Like progressive rock songs, progressive metal songs are typically much longer than standard metal songs, and are often thematically linked in concept albums. Progressive metal is more associated with the "new-wave" of heavy metal than traditional heavy metal.Power metal:Power metal is a style of heavy metal music combining characteristics of traditional metal with speed metal, often within symphonic context. Fusion genres: symphonic metal, progressive metal, folk metal, neo-classical metal______________________________________________________________________ Related groups: 1. Classic Rock & Metal: http://www.zedge.net/group/Classic_Rock/ 2. Dream Theater: http://www.zedge.net/group/Dream_Theater/