Proto-prog (short for proto-progressive) is the earliest work associated with the first wave of
progressive rock
Progressive rock (shortened as prog rock or simply prog) is a broad genre of rock music that primarily developed in the United Kingdom through the mid- to late 1960s, peaking in the early-to-mid-1970s. Initially termed " progressive pop", the ...
music, known then as "
progressive pop
Progressive pop is pop music that attempts to break with the genre's standard formula, or an offshoot of the progressive rock genre that was commonly heard on AM radio in the 1970s and 1980s. It was originally termed for the early progressive ...
". Such musicians were influenced by
modern classical and other genres usually outside of traditional rock influences. They often employed longer and more complicated compositions, interconnected songs as medley, and
studio composition. Some of the artists that were essential to the development of progressive rock, rather than just anticipating the movement, include
the Beatles
The Beatles were an English Rock music, rock band formed in Liverpool in 1960. The core lineup of the band comprised John Lennon, Paul McCartney, George Harrison and Ringo Starr. They are widely regarded as the Cultural impact of the Beatle ...
,
the Beach Boys
The Beach Boys are an American Rock music, rock band formed in Hawthorne, California, in 1961. The group's original lineup consisted of brothers Brian Wilson, Brian, Dennis Wilson, Dennis, and Carl Wilson, their cousin Mike Love, and their f ...
,
the Doors
The Doors were an American rock band formed in Los Angeles in 1965, comprising vocalist Jim Morrison, keyboardist Ray Manzarek, guitarist Robby Krieger and drummer John Densmore. They were among the most influential and controversial rock acts ...
,
The Mothers of Invention
The Mothers of Invention (also known as the Mothers) were an American rock music, rock band from California. Formed in 1964, their work is marked by the use of sonic experimentation, innovative album art, and elaborate live shows. Originally an ...
,
the Pretty Things,
the Zombies,
the Byrds
The Byrds () were an American Rock music, rock band formed in Los Angeles, California, in 1964. The band underwent multiple lineup changes throughout its existence, with frontman Roger McGuinn (known as Jim McGuinn until mid-1967) being the so ...
,
the Grateful Dead
The Grateful Dead was an American rock band formed in Palo Alto, California, in 1965. Known for their eclectic style that fused elements of rock, blues, jazz, folk, country, bluegrass, rock and roll, gospel, reggae, and world music with psyc ...
and
Pink Floyd
Pink Floyd are an English Rock music, rock band formed in London in 1965. Gaining an early following as one of the first British psychedelic music, psychedelic groups, they were distinguished by their extended compositions, sonic experiments ...
.
Definition

Although a unidirectional English "progressive" style emerged in the late 1960s, by 1967, progressive rock had come to constitute a diversity of loosely associated style codes. When the "progressive" label arrived, the music was dubbed "
progressive pop
Progressive pop is pop music that attempts to break with the genre's standard formula, or an offshoot of the progressive rock genre that was commonly heard on AM radio in the 1970s and 1980s. It was originally termed for the early progressive ...
" before it was called "progressive rock", with the term "progressive" referring to the wide range of attempts to break with standard pop music formula.
Music writer Doyle Greene believes that the "proto-prog" label can stretch to "the later
Beatles
The Beatles were an English Rock music, rock band formed in Liverpool in 1960. The core lineup of the band comprised John Lennon, Paul McCartney, George Harrison and Ringo Starr. They are widely regarded as the Cultural impact of the Beatle ...
and
Frank Zappa
Frank Vincent Zappa (December 21, 1940 – December 4, 1993) was an American guitarist, composer, and bandleader. In a career spanning more than 30 years, Zappa composed Rock music, rock, Pop music, pop, jazz, jazz fusion, orchestra ...
",
Pink Floyd
Pink Floyd are an English Rock music, rock band formed in London in 1965. Gaining an early following as one of the first British psychedelic music, psychedelic groups, they were distinguished by their extended compositions, sonic experiments ...
,
Soft Machine
Soft Machine are an English Rock music, rock band from Canterbury, Kent. The band were formed in 1966 by Mike Ratledge, Robert Wyatt, Kevin Ayers, Daevid Allen and Larry Nowlin. Soft Machine were central in the Canterbury scene; they became o ...
, and
United States of America
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 states and a federal capital district, Washington, D.C. The 48 contiguo ...
. Edward Macan, an author of progressive rock books, says that psychedelic bands like
the Nice
The Nice were an English progressive rock band active in the late 1960s. They blended rock, jazz and classical music.
Keyboardist Keith Emerson, bassist Lee Jackson (bassist), Lee Jackson, guitarist David O'List, and drummer Ian Hague ori ...
,
the Moody Blues
The Moody Blues were an English rock band formed in Birmingham in May 1964. The band initially consisted of Graeme Edge (drums), Denny Laine (guitar/vocals), Mike Pinder (keyboards/vocals), Ray Thomas (multi-instrumentalist/vocals) and Clint W ...
, and Pink Floyd represent a proto-progressive style and the first wave of English
progressive rock
Progressive rock (shortened as prog rock or simply prog) is a broad genre of rock music that primarily developed in the United Kingdom through the mid- to late 1960s, peaking in the early-to-mid-1970s. Initially termed " progressive pop", the ...
. Conversely, academics Paul Hegarty and Martin Halliwell identify the Beatles,
the Beach Boys
The Beach Boys are an American Rock music, rock band formed in Hawthorne, California, in 1961. The group's original lineup consisted of brothers Brian Wilson, Brian, Dennis Wilson, Dennis, and Carl Wilson, their cousin Mike Love, and their f ...
,
the Doors
The Doors were an American rock band formed in Los Angeles in 1965, comprising vocalist Jim Morrison, keyboardist Ray Manzarek, guitarist Robby Krieger and drummer John Densmore. They were among the most influential and controversial rock acts ...
,
the Pretty Things,
the Zombies,
the Byrds
The Byrds () were an American Rock music, rock band formed in Los Angeles, California, in 1964. The band underwent multiple lineup changes throughout its existence, with frontman Roger McGuinn (known as Jim McGuinn until mid-1967) being the so ...
,
the Grateful Dead
The Grateful Dead was an American rock band formed in Palo Alto, California, in 1965. Known for their eclectic style that fused elements of rock, blues, jazz, folk, country, bluegrass, rock and roll, gospel, reggae, and world music with psyc ...
and Pink Floyd "not merely as precursors of prog but as essential developments of progressiveness in its early days".
At the time, critics generally assumed
King Crimson
King Crimson were an English progressive rock band formed in London in 1968 by Robert Fripp, Michael Giles, Greg Lake, Ian McDonald (musician), Ian McDonald and Peter Sinfield. Guitarist Fripp remained the only constant member throughout the ...
's album ''
In the Court of the Crimson King
''In the Court of the Crimson King'' (subtitled ''An Observation by King Crimson'') is the debut studio album by English progressive rock band King Crimson, released on 10 October 1969, by Island Records. Often regarded as the first true progre ...
'' (1969) to be the logical extension and development of late 1960s proto-progressive rock exemplified by the Moody Blues,
Procol Harum
Procol Harum () were an English rock music, rock band formed in Southend-on-Sea, Essex, in 1967. Their best-known recording is the 1967 hit single "A Whiter Shade of Pale", one of the few singles to have sold more than List of best-selling si ...
, Pink Floyd, and the Beatles. According to Macan, the album may be the most influential to progressive rock for crystallizing the music of earlier "proto-progressive bands ... into a distinctive, immediately recognizable style". He distinguishes 1970s "classic" prog from late 1960s proto-prog by the conscious rejection of psychedelic rock elements, which proto-progressive bands continued to support.
References
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{{Progressive music
Progressive rock
20th-century music genres
Psychedelic rock