<Tr> <Td> </Td> <Td> This section is missing information about the 1980s--2000s . Please expand the section to include this information . Further details may exist on the talk page . (October 2017) </Td> </Tr> <P> Throughout its development, pop music has absorbed influences from other genres of popular music . Early pop music drew on the sentimental ballad for its form, gained its use of vocal harmonies from gospel and soul music, instrumentation from jazz and rock music, orchestration from classical music, tempo from dance music, backing from electronic music, rhythmic elements from hip - hop music, and spoken passages from rap . </P> <P> In the 1960s, the majority of mainstream pop music fell in two categories: guitar, drum and bass groups or singers backed by a traditional orchestra . Since early in the decade, it was common for pop producers, songwriters, and engineers to freely experiment with musical form, orchestration, unnatural reverb, and other sound effects . Some of the best known examples are Phil Spector's Wall of Sound and Joe Meek's use of homemade electronic sound effects for acts like the Tornados . At the same time, pop music on radio and in both American and British film moved away from refined Tin Pan Alley to more eccentric songwriting and incorporated reverb - drenched rock guitar, symphonic strings, and horns played by groups of properly arranged and rehearsed studio musicians . </P> <P> During the mid-1960s, pop music made repeated forays into new sounds, styles, and techniques that inspired public discourse among its listeners . The word "progressive" was frequently used, and it was thought that every song and single was to be a "progression" from the last . Music critic Simon Reynolds writes that beginning with 1967, a divide would exist between "progressive" pop and "mass / chart" pop, a separation which was "also, broadly, one between boys and girls, middle - class and working - class ." Before the progressive pop of the late 1960s, performers were typically unable to decide on the artistic content of their music . Assisted by the mid-1960s economic boom, record labels began investing in artists, giving them freedom to experiment, and offering them limited control over their content and marketing . This situation fell in disuse after the late 1970s and would not reemerge until the rise of Internet stars . Indie pop, which developed in the late 1970s, marked another departure from the glamour of contemporary pop music, with guitar bands formed on the then - novel premise that one could record and release their own music without having to procure a record contract from a major label . In 2014, pop music worldwide was permeated by electronic dance music . </P>

What type of instruments are used in pop music
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