How Music Formats Changed the Music We Make: From Shellac to Streaming

From shellac records to streaming, every major change in recorded music has brought new possibilities and new restrictions. The history of formats is also a history of how musicians compose, how studios work and how records reach their audience.

A ten-inch 78 rpm disc could hold only a few minutes of music. A twelve-inch LP made longer performances and carefully sequenced albums practical, but required the listener to turn it over. Cassette tape could be recorded at home, while the CD gave most listeners their first experience of digital audio without tape hiss or groove noise. Today a musician can distribute a recording worldwide without manufacturing anything at all. None of these changes was simply an improvement in sound quality: some made music more portable, others cheaper to produce, easier to copy or more convenient to organise.

The boundaries are equally revealing. A record producer in the 1950s dealt with the duration and physical characteristics of a disc; by the 1980s the decisions included tape generations and digital sampling; now attention may turn to file formats, loudness and the demands of streaming. Throughout this history, older methods have continued alongside new ones, sometimes because their limitations became creatively useful.

The timeline: key format milestones

Shellac: when one side meant one performance

Shellac 78 rpm record player. Photograph: Sven, CC BY 4.0, via Wikimedia Commons.

The flat disc emerged in the late nineteenth century and became the dominant commercial sound carrier during the first half of the twentieth. Records were commonly pressed in a shellac-based compound and played at approximately 78 revolutions per minute. A ten-inch disc generally held around three minutes per side; a twelve-inch record might allow four or five. These were typical figures rather than absolute limits, depending on the groove and recording level. Unlike later vinyl records, shellac discs were brittle and used relatively coarse grooves.

The earliest commercial sessions were recorded acoustically through a horn. Musicians had to arrange themselves around the recording apparatus, and louder instruments had a distinct advantage. Electrical recording in the 1920s introduced microphones and amplified cutting systems, improving both balance and the range of sounds that could be captured. Crooners, small ensembles and quieter instrumental detail benefited particularly from this development.

Short sides had a measurable musical consequence. Jazz musicians performing extended solos live had to condense them for recording. The 1920s recordings of Louis Armstrong’s Hot Five and Hot Seven show how much invention could be packed into a short disc side. Popular songs were already often concise because of publishing, theatre and radio conventions, but the 78 reinforced the three-minute commercial recording. Classical labels packaged multi-disc works in bound albums, establishing the terminology long before the vinyl LP.

The LP: time, sequencing and the album as a work

Columbia introduced the 33⅓ rpm microgroove LP in 1948, led by work from Peter Goldmark’s team. A twelve-inch vinyl disc could accommodate approximately twenty to twenty-five minutes per side, although long or heavily modulated programmes required compromises. It dramatically reduced the interruptions involved in listening to classical works and created room for extended jazz performances. Record companies also gained a much larger sleeve for photography, artwork and notes.

The longer side changed the decisions available to musicians. Miles Davis’s Kind of Blue (1959) contains performances lasting considerably longer than a shellac side. In popular music, Pet Sounds, Sgt. Pepper’s Lonely Hearts Club Band and The Dark Side of the Moon reveal different approaches to sequencing, sound continuity and making an album feel complete. The LP didn’t invent the extended composition or concept album, but it provided a convenient domestic medium for them.

Vinyl also imposed substantial technical conditions on the mastering process. The cutting stylus makes a physical groove, and louder signals generally demand greater movement. Strong bass, difficult stereo low-frequency information and extended playing times all affect the amount of space needed. A side with too much music may need to be cut more quietly. Tracing high frequencies also becomes more demanding near the disc’s centre, where the groove moves more slowly past the stylus. RIAA pre-emphasis during cutting and complementary playback equalisation made quieter, longer and more practical records possible. A producer’s choice of running order could therefore have consequences beyond pacing.

The 7-inch single: the economics of three minutes

Seven-inch 45 rpm record. Photograph: Banfield, CC BY-SA 3.0, via Wikimedia Commons.

RCA Victor launched the seven-inch 45 rpm disc in 1949. Its compact size, durability and ability to play automatically in jukeboxes made it exceptionally useful for the growing singles market. A conventional side accommodated roughly three to five minutes, with extended-play versions making concessions in cutting level or groove spacing.

The relationship between the A-side and B-side became part of popular music culture. Labels invested in strong single mixes, while artists could place instrumental versions, experiments or less obvious material on the reverse. The Beatles’ double A-side of “Strawberry Fields Forever” and “Penny Lane” in 1967 demonstrated that a single could be a significant release in its own right rather than an album advertisement. Seven-inch singles also encouraged producers to consider how a record sounded on car radios, transistor sets and jukebox speakers. Mono compatibility, a prominent vocal and a forceful rhythm section could matter commercially.

Reel-to-reel tape: the invention of the editable performance

Magnetic tape’s influence on production was arguably greater than that of many consumer formats. After significant development in Germany during the 1930s and 1940s, professional machines became central to post-war recording. Tape allowed edits with a razor blade, repeated takes, overdubbing and, eventually, increasingly elaborate multitrack arrangements. Tape speed, track width, noise and generation loss remained important technical considerations; professional machines commonly operated at 15 or 30 inches per second, with slower speeds used elsewhere.

Les Paul’s experiments in overdubbing demonstrated that recorded performances need not happen all at once. Later, The Beach Boys’ “Good Vibrations” (1966) was assembled through extensive sessions and editing. The Beatles’ Revolver (1966) used tape loops, reversed recording and varispeed; Pink Floyd’s “Money” made a literal tape loop of coins and cash registers part of its rhythm. In dub, engineers such as King Tubby treated the mixing desk, tape delay and effects returns as creative instruments. These innovations were not tied to a single commercial format, but to the ability to work on a recording after the musicians had performed.

Compact cassette: an album you could record yourself

Compact Cassette. Photograph: Etienne Girardet, Unsplash Licence.

Philips introduced the Compact Cassette in Berlin in 1963, initially with speech recording in mind. Tape moved at 1⅞ inches per second (4.76 cm/s), enclosed in a convenient plastic shell. C60 and C90 tapes provided thirty or forty-five minutes per side; C120 offered longer duration but used thinner tape. Noise, wow and flutter, coating quality and head alignment limited fidelity, although improvements in tape formulation and Dolby noise reduction made cassette a serious music format.

Crucially, it was recordable at home. Listeners made compilations, copied LPs and captured radio programmes. The format also opened independent distribution to musicians unable to finance vinyl pressing. Cassette labels and networks were especially important to punk, industrial, noise and experimental electronic music. Sony’s Walkman, introduced in 1979, gave listeners a personal stereo soundtrack outside the home.

The TEAC 144 Portastudio, also launched in 1979, was another turning point: four cassette tracks and a small mixer in a unit designed for musicians. Bruce Springsteen’s Nebraska (1982) grew out of home four-track recordings and remained recognisably intimate when issued commercially. The format’s limited tracks required decisions about bouncing and committing parts, making its restrictions part of the production.

8-track: a format built for the road

8-track cartridge. Photograph: State Library of North Carolina, CC BY 2.0, via Wikimedia Commons.

The Stereo 8 cartridge, championed by Bill Lear and supported by vehicle manufacturers, gained ground in the mid-1960s. Its endless-loop tape travelled at 3¾ inches per second. Eight recorded tracks formed four stereo programmes, with a moving playback head switching between them. This removed the need to turn a cassette over and made the system attractive for car use, particularly in the United States.

But the four programmes were a poor match for many LP sequences. Tracks could be rearranged or interrupted by an audible change of programme. Pink Floyd’s Animals (1977) is a particularly revealing example: an 8-track edition joined the two parts of “Pigs on the Wing” with a Snowy White guitar solo, while longer tracks were divided between programmes. Hardware support from Ford and other manufacturers helped the format succeed, but its mechanical complexity and the more versatile Compact Cassette eventually worked against it. The Pink Floyd Archives documents the UK cartridge programmes.

Compact Disc: digital audio in the living room

The CD was jointly developed by Sony and Philips and reached consumers in 1982. A standard audio CD stores stereo PCM at 44.1 kHz and 16-bit resolution, with approximately 74 minutes originally and later 80-minute editions. Laser reading and error correction removed routine groove wear and the background hiss of analogue tape, while direct track access changed how listeners navigated an album.

The size of the medium changed packaging, and the running time changed musical decisions. Artists could produce albums longer than a conventional LP without dividing them into sides, while labels added bonus tracks and archived material to reissues. This was an expansion of capacity, not a guarantee of better artistic results. An album recorded and mixed on analogue tape could be issued on CD, and a digital recording could still be cut to vinyl.

Digital mastering also brought a precisely defined maximum amplitude. Hard clipping, peak limiting and increasing competition for loudness became major concerns over subsequent decades. The so-called loudness war was driven by commercial practice and available tools as much as by the CD itself.

DAT and CD-R: digital technology behind the scenes

DAT and analogue cassette compared. Photograph: Inpriva, CC licence as indicated on Commons, via Wikimedia Commons.

Sony introduced Digital Audio Tape (DAT) in 1987. It recorded digital audio on a small magnetic cassette with a rotating-head mechanism. Professional and domestic machines supported 16-bit recording at 48 kHz, often alongside 44.1 kHz and other modes; tape capacity varied, with 60-, 90- and 120-minute lengths familiar in professional work. DAT found a place in field recording, broadcast, live sound and as a delivery medium for digital stereo masters. Its cost, mechanical maintenance and limited mass-market adoption kept it from becoming the household successor to cassette.

Recordable CD. Photograph: Asanagi, CC0, via Wikimedia Commons.

Recordable CD, standardised around the end of the 1980s and increasingly affordable during the 1990s, was transformative for another reason. A musician could prepare a digital master, burn copies, distribute demos or sell modest runs without paying for a pressed CD manufacturing order. A typical audio CD-R held 74 or 80 minutes. Compatibility varied between early players and recorders, and a burned disc was not as reliably permanent as the word ‘digital’ sometimes implied. Together, DAT and CD-R form an important bridge between professional studio infrastructure and computer-based music making.

MiniDisc: a portable editor rather than a miniature CD

Recordable MiniDisc. Photograph: Evan-Amos, public domain, via Wikimedia Commons.

Sony launched MiniDisc in 1992. Its protected magneto-optical cartridge offered portable recordability and the ability to split, name and rearrange tracks. Standard stereo recordings typically offered 60, 74 or 80 minutes, using Sony’s ATRAC perceptual compression rather than CD’s uncompressed PCM. MDLP later introduced extended recording modes; NetMD and Hi-MD brought further computer integration and, in some cases, higher-quality recording.

MiniDisc became especially useful for field recording, interviews, rehearsals and live sets. It was also popular with musicians who wanted portable digital capture before laptops and solid-state recorders became common. Compared with cassette it offered convenient editing and repeatable playback, but the format depended heavily on Sony’s ecosystem and was overtaken by more flexible file-based devices.

MP3: from the album shelf to the hard drive

MPEG Audio Layer III emerged from work involving Fraunhofer and the MPEG standards process in the early 1990s; the .mp3 extension was adopted in 1995. It compressed digital audio by reducing information judged less audible, dramatically shrinking file size at the expense of some signal detail. A four-minute song stored as CD-quality stereo PCM occupies roughly 42 MB; at 128 kbit/s, an MP3 takes about 3.8 MB.

That difference was decisive in the era of slow internet connections and small hard drives. Music could be traded, downloaded and placed on increasingly capacious portable players without a corresponding disc or tape for each album. The iPod, introduced in 2001, was influential not because it invented digital playback, but because its interface, storage and associated software made a sizeable personal library manageable.

Lossy compression could introduce audible artefacts at low bitrates, particularly around complex transients and high frequencies, but higher bitrates and better encoders improved results. More importantly, the physical carrier had become optional. Legal downloads and unauthorised sharing both changed the economics of recorded music; the ability to buy or obtain individual tracks further weakened the album’s position as the default transaction.

Streaming: fewer physical limits, new commercial pressures

Streaming services shifted the transaction again, from acquiring a recording to accessing a licensed catalogue. Music is now delivered over networks in formats determined by the service, subscription tier and playback device. Some platforms offer lossless audio, while perceptual codecs remain widespread. Offline caching can make the experience resemble ownership, although continued access is generally conditional on the service and its rights agreements.

The album survives, but playlists, recommendations and short-form social media have made individual tracks central to discovery. Some releases have become shorter or more frequent, yet extended works remain common in jazz, electronic music and other genres. These patterns cannot be attributed to one technical specification; they reflect the economics of platforms, audience behaviour and artists’ creative choices.

Mastering engineers also work with a different set of constraints. Digital files have peak ceilings, lossy encoding can generate inter-sample peaks and playback services may apply loudness normalisation. Spotify’s published guidance, for example, describes normalisation around −14 LUFS in its normal mode, but that is not a mandatory mastering target. Unlike a vinyl cutting engineer, a streaming engineer need not budget for the space a bass note occupies in a groove, yet every recording still has to work across phones, headphones, cars and domestic hi-fi systems.

What the formats have taught musicians

The story is not a simple procession in which a better technology makes the previous one obsolete. Magnetic tape made editing and overdubbing practical before cassettes became a consumer standard. The LP allowed longer uninterrupted listening, while singles continued to drive pop charts. Cassette and CD-R lowered the cost of independent distribution, but the record industry still controlled much of what reached shops and radio. MP3 and streaming removed many physical obstacles to release while introducing new forms of dependence on platforms and attention.

A modern producer can imitate tape saturation, sequence sounds like an early synthesiser or press a release onto vinyl for its physical appeal. None of those decisions is technologically necessary. The persistence of these formats suggests that their working methods and cultural meanings have become part of music itself. A side change, a tape splice or the noise of a poorly duplicated cassette can still be a compositional choice.

For a musician, the interesting question is therefore not which format sounds best in the abstract, but what a medium permits, what it discourages and who gets to use it. The shellac side, vinyl cutting lathe, cassette four-track and digital workstation all offer different answers. Streaming has not ended that history. It is simply the latest environment in which music is made to fit the means of its reproduction.

Further reading and sources

• Philips company history and Philips Museum’s cassette history.
• Sony’s history of Compact Disc development.
• Fraunhofer on MP3’s development.
• Spotify’s loudness normalisation guidance.
• Classic Albums: recording histories, arrangements and vinyl guides.

Image credits and source licences are provided beneath the photographs. Illustrations are licensed photographs of the formats, not original Wax Vinyl Records photography. We welcome the opportunity to replace them with photographs from our own collection in future.