thumb|upright=1.2|[[Phil Spector's usual studio musicians, later dubbed "the Wrecking Crew", gathered at a Gold Star recording session in the 1960s.]]
The Wall of Sound is a recording approach and style of music production developed by American producer and songwriter Phil Spector at Gold Star Studios in the early 1960s. Aspiring for an aesthetic akin to the live spontaneity of 1950s rock 'n' roll records on an orchestral scale, his method involved treatment of the studio as a compositional tool alongside a rotating ensemble of about twenty-five Los Angeles-based session musicians, later known as the Wrecking Crew and sometimes credited as "the Phil Spector Wall of Sound Orchestra". From 1962 to 1966, he produced over a dozen U.S. top 40 hits, most of which were co-authored with songwriting teams such as Ellie Greenwich and Jeff Barry, and nearly all in conjunction with arranger Jack Nitzsche and engineer Larry Levine.
Spector's process combined arranging, rehearsal, and mixing simultaneously. Furthering R&B recording practices learned under Leiber and Stoller, his self-described "Wagnerian" approach quadrupled the typical four-person rock band lineup, augmented by woodwind, brass, and string sections. He mixed exclusively in mono and around extreme loudness, and prominently employed ambience and echo, reverb and compression effects unique to Gold Star's constrained layout. Sessions routinely exceeded the standard three-hour block; he devoted much of the time to diffusing instruments, a process coupling orchestral doubling with level balancing and microphone placement, which produced a chorusing or phasing effect irreplicable through electronic means.
Elements of Spector's technique spread throughout rock music and informed the development of styles including the Motown sound, psychedelia, French yé-yé, and later Philadelphia soul and Japanese popular music. By the mid-1960s, the Wall of Sound was reconfigured by producers such as Shadow Morton, Brian Wilson, Andrew Loog Oldham, and Johnny Franz; many acts, including Wizzard, ABBA, and Bruce Springsteen, enjoyed success with variants of the technique through the 1970s. By the 1980s, large-scale live ensemble recording in popular music had waned, at which time a broad indie music movement, encompassing alternative rock, shoegaze and dream pop bands, developed an offshoot of the Wall of Sound that substituted its orchestration with digital effects and loud, distorted guitars. Pioneering groups included Cocteau Twins, the Jesus and Mary Chain, and My Bloody Valentine.
Background and early influences
Spector's early music interests included dance music, showtunes, top 40 radio, jazz, and blues. His musical education came largely through listening and purchasing sheet music, and he cited jazz, early rock and roll, and African-American musical traditions as his formative influences. He acquired his first guitar at age 13 and received lessons from session musicians Burdell Mathis, Howard Roberts, and Bill Pitman. After attending an Ella Fitzgerald concert in 1955 that featured guitarist Barney Kessel—whom he later called the “greatest musician I’ve ever known”—Spector met Kessel, who encouraged him to pursue rock and roll over jazz, assisted him with recordings at Wallichs Music City's demo booths, and advised him to observe Hollywood studio sessions.
By 1956, Spector was drawn to the emerging rock and roll sound typified by performers such as Elvis Presley and Buddy Holly. In addition to learning accordion and French horn, he participated in the music programs at Fairfax High School, performed locally with peers such as guitarist Marshall Leib and saxophonist Steve Douglas, and became acquainted with fellow student Michael Spencer, a classically trained pianist. He frequently visited Spencer's family household, whose audio system had large Patrician Electro-Voice speakers and an amplifier equipped with a "time-lag" feature that simulated concert hall reverberation. Using this set-up, Spector studied composers such as Jean Sibelius, George Gershwin, and Richard Wagner. According to musicologist Sean MacLeod, Wagner became the main source of inspiration for Spector in his Wall of Sound technique.
Initially, Spector's own sessions generally employed a standard rhythm section of bass, drums, piano, and two or three guitarists. By age 21, he controlled his independent label, Philles Records, exercising comprehensive authority over his productions, which he likened to art films and "little symphonies for the kids". He diverged from the prevailing minimalism of rock and roll production, then perceived as the genre's main appeal, and employed an orchestra of musicians. In 1964, he explained that his objective was to develop a sound capable of "fifteen hit records and more" even with weak material: "It was a case of augmenting, augmenting, augmenting. It all fitted like a jigsaw." Author and musician Bob Stanley later characterized the resulting sound as a "dam-busting" amplification of the production style heard on the Aquatones' 1958 record "You".
Etymology
thumb|left|upright|[[Andrew Loog Oldham (left) with Mick Jagger in 1966. Oldham popularized the term "wall of sound" to describe Spector's production style, which Oldham imitated on records produced for the Rolling Stones.]]
The earliest known use of the phrase "wall of sound" appeared in an 1884 New York Times report on Wagner's redesign of the Bayreuth Festival Theater, where an orchestra pit placement created the illusion of a sonic wall emanating from an unseen source. The term reemerged in the 1950s in association with Stan Kenton's big band arrangement and later applied by English producer Andrew Loog Oldham as a catch-all descriptor for Spector's production style. In the United Kingdom, producer George Martin had issued a version of "You've Lost That Lovin' Feelin'" by Cilla Black before the Righteous Brothers' original was made available. In response, Oldham placed advertisements in Melody Maker promoting the original version as a "wall of sound".
Less commonly, the term "Spector Sound" (or "Spectorsound") is used. He rejected such characterization, explaining in a 1969 interview: "I don't have a sound, a Phil Spector sound. I have a style, and my style is just a particular way of making records." Related terms later included "Spectropop" and "Gold Star single", both referencing 1960s orchestral pop records using his approach. "Wall of Sound” was also adopted for the Grateful Dead's unrelated live sound system used mainly in 1974.
Songwriters and collaborators
thumb|upright|Spector's songwriting collaborators [[Ellie Greenwich and Jeff Barry with the Dixie Cups (1964)]]
Coverage of Spector's method in the 1960s sometimes excluded principal collaborators and reinforced a perception that he worked in isolation. As his industry influence grew, he regularly negotiated co-writing credit, arguing that a song was not complete until it had been produced. Many of his songwriting credits were shared with Brill Building teams such as Gerry Goffin and Carole King or Ellie Greenwich and Jeff Barry and he characterized his own collaborative role as that of "a steering wheel" guiding their musical and lyrical ideas. His most prolific songwriting partnership was with Greenwich and Barry, whose working sessions involved Greenwich on piano, Spector on guitar, and Barry on percussion. Spector considered them to be the most synchronized with his creative vision: "The others understood, but not as much as Jeff and Ellie did."
Spector's most commercially successful period, from 1962 to 1966, consistently involved arranger Jack Nitzsche and engineer Larry Levine. He employed a rotating This group included one of his earliest collaborators, saxophonist Nino Tempo, an occasional songwriting partner who regularly participated in sessions until the late 1970s.
thumb|left|upright| [[Jack Nitzsche (pictured circa 1990s) co-arranged the majority of songs produced by Spector in the 1960s ]]
Together with Spector and his studio ensemble, Nitzsche and Levine comprised the core creative team at Philles Records. Spector constructed his arrangements from lead sheets prepared by Nitzsche, He strictly followed Spector's instruction and attributed his "biggest" contribution to being Spector's "sounding board": "When we were in the control room, he would ask me endlessly ‘What do you think?’” These constraints, together with the studio's idiosyncratic layout, acoustics, and echo chambers, were central to the Wall of Sound. Guitarist Jerry Cole felt "if it wasn't for Gold Star he would never have had a 'Wall of Sound' [...] The studio and Gold Star's echo chambers was the 'Wall of Sound.'”
Sessions were often crowded, with musicians, observers, and additional personnel.
The Wall of Sound incorporated an expanded rhythm section derived from R&B traditions and structured around specific patterns for guitars, drums, and bass. Instrumentation frequently included those three in addition to keyboards and several percussive instruments, augmented by woodwind, brass, and string sections.