Progressive music in the context of "Album era"

Sunshine pop (originally called soft pop and soft rock) is a loosely defined form of pop music that was first associated with early soft rock producers and songwriters based in Los Angeles, California, during the mid- to late 1960s. Its studio-centric sound was primarily rooted in folk rock and easy listening, typically featuring rich harmony vocals and progressive elements, while lyrics combined idyllic imagery with a subtle awareness of societal change, melancholic undertones, and countercultural themes. It was among the dominating music styles heard in television, film, and commercials of the era.

Branching from the nascent California sound, the movement initially straddled multiple styles among many groups who existed briefly while adapting to evolving music trends, resulting in much crossover with bubblegum, folk-pop, garage rock, baroque pop, and psychedelia. Most groups were less successful sound-alikes of acts such as the Mamas & the Papas, led by John Phillips, and the 5th Dimension, whose songs were initially helmed by Jimmy Webb. Curt Boettcher produced numerous key records for the Association, Eternity's Children, his band the Millennium, and with collaborator Gary Usher (Sagittarius). Though the Beach Boys rarely approached the style, Brian Wilson's production of their 1966 album Pet Sounds was a foundational influence on this milieu, as were the arrangements of Burt Bacharach.

Progressive rock (shortened to 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 style emerged from psychedelic bands who abandoned standard pop or rock traditions in favour of instrumental and compositional techniques more commonly associated with jazz, folk, or classical music, while retaining the instrumentation typical of rock 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 rather than dancing.

Progressive rock includes a fusion of styles, approaches and genres, and tends to be diverse and eclectic. Progressive rock is often associated with long solos, extended pieces, fantastic lyrics, grandiose stage sets and costumes, and an obsessive dedication to technical skill. While the genre is often cited for its merging of high culture and low culture, few artists incorporated classical themes in their work to a significant degree, and only a handful of groups, such as Emerson, Lake & Palmer and Renaissance, intentionally emulated or referenced classical music.

Progressive soul (often shortened to prog-soul; also called black prog, black rock, and progressive R&B) is a type of African-American music that uses a progressive approach, particularly in the context of the soul and funk genres. It developed in the late 1960s and early 1970s through the recordings of innovative black musicians who pushed the structural and stylistic boundaries of those genres. Among their influences were musical forms that arose from rhythm and blues music's transformation into rock, such as Motown, progressive rock, psychedelic soul, and jazz fusion.

Progressive soul music can feature an eclectic range of influences, from both African and European sources. Musical characteristics commonly found in works of the genre are traditional R&B melodies, complex vocal patterns, rhythmically unified extended composition, ambitious rock guitar, and instrumental techniques borrowed from jazz. Prog-soul artists often write songs around album-oriented concepts and socially conscious topics based in the African-American experience, left-wing politics, and bohemianism, sometimes employing thematic devices from Afrofuturism and science fiction. Their lyrics, while challenging, can also be marked by irony and humor.

Pet Sounds is the eleventh studio album by the American rock band the Beach Boys, released on May 16, 1966, by Capitol Records. It was produced, arranged, and primarily composed by Brian Wilson with guest lyricist Tony Asher. Recorded largely between January and April 1966, it furthered the orchestral sound introduced in The Beach Boys Today! (1965). Initially promoted as "the most progressive pop album ever", Pet Sounds is recognized for its ambitious production, sophisticated harmonic structures, and coming of age themes. It is widely regarded as among the greatest and most influential albums in music history.

Wilson viewed Pet Sounds as a solo album and attributed its inspiration partly to marijuana use and an LSD–rooted spiritual awakening. Galvanized by the work of his rivals, he aimed to create "the greatest rock album ever made", surpassing the Beatles' Rubber Soul (1965) and extending Phil Spector's Wall of Sound innovations. His orchestrations blended pop, jazz, exotica, classical, and avant-garde elements, combining rock instrumentation with layered vocal harmonies, found sounds, and instruments not normally associated with rock, such as French horn, flutes, Electro-Theremin, bass harmonica, bicycle bells, and string ensembles. Featuring the most complex and challenging instrumental and vocal parts of any Beach Boys album, it was their first in which studio musicians, such as the Wrecking Crew, largely replaced the band on their instruments, and the first time any group had departed from their usual small-ensemble pop/rock band format to create a full-length album that could not be replicated live. Its unprecedented total production cost exceeded $70,000 (equivalent to $680,000 in 2024).