Extended play
group of extended play releases by an artist usually released at the same time with the same title and tracks but in different formats for consumption (digital, CD, LP)
An extended play (EP) is a musical recording that contains more tracks than a single but fewer than an album. Contemporary EPs usually contain up to eight tracks and have a playing time of 15 to 30 minutes. An EP is usually less cohesive than an album and more "non-committal".
The term "extended play" originally referred to a specific type of 45 rpm phonograph record other than 78 rpm standard-play (SP) and 33+1⁄3 rpm long-play (LP), but, with the advent of digital media, has evolved to apply to mid-length CDs and music downloads. EPs are considered "less expensive and less time-consuming" for an artist to produce than an album, and have long been popular with punk and indie bands. In K-pop and J-pop, they are usually referred to as mini-albums.
Background
History
In the 1940s, when the 45 rpm single and 331⁄3 rpm LP were competing formats, 7-inch 45 rpm singles had a maximum playing time of only about four minutes per side. Partly as an attempt to compete with the LP introduced in 1948 by rival Columbia, RCA Victor introduced "Extended Play" 45s during 1952. Their narrower grooves, achieved by lowering the cutting levels and sound compression optionally, enabled them to hold up to 7.5 minutes per side—but still be played by a standard 45 rpm phonograph. In the early era, record companies released the entire content of LPs as 45 rpm EPs.
Begin with the source’s own compact description: “Extended play” is group of extended play releases by an artist usually released at the same time with the same title and tracks but in different formats for consumption (digital, CD, LP). The dossier treats that line as a proposition to test through Extended, play and group, not as a finished interpretation.
Why this record matters
The phrase “group of extended play releases by an artist usually released at the same time with the same title and tracks but in different formats for consumption (digital, CD, LP)” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Sep 22, 2026. The linked authority identifier is Q169930. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1948 and 1952.
A concise life account rarely captures disputed attribution, private networks or the changing language used to describe a career. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.
- Establishing names and roles
- Building a first chronology
- Locating cited institutions
Personal papers, civil or court records, institutional files and the scholarship cited by the source.
Three-step research path
- Establish the record: confirm the title “Extended play”, its source revision and the description used here.
- Expand the search: follow Extended play primary sources, Extended play archive and Extended research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Extended play”?
- How has the subject’s reputation changed across later accounts?
- Which primary records establish identity, chronology and institutional ties?
Search terms from this dossier
This entry incorporates text from “Extended play” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.