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Research dossier · Arts & Letters

Extended Circle

2014 studio album by Tord Gustavsen Quartet

Manuscripts, fine bindings, an engraving plate and preserved performance ephemera
Arts and lettersInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionApr 18, 2026
Entity authorityQ17003710 ↗
Source-derived summary

Extended Circle is an album by the Tord Gustavsen Quartet recorded in June 2013 and released on ECM January the following year. The quartet features saxophonist Tore Brunborg and rhythm section Mats Eilertsen and Jarle Vespestad.

Editorial summary

Begin with the source’s own compact description: “Extended Circle” is 2014 studio album by Tord Gustavsen Quartet. The dossier treats that line as a proposition to test through Extended, Circle and studio, not as a finished interpretation.

Editorial reviewBest approached as a cultural-object dossier: authorship and date matter, but circulation and reception often explain the wider significance. The current lead gives the account dated anchors—2013—that can be checked directly. The linked authority record independently contributes the date 2014-01-17. For this dossier, Extended, Circle and studio is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “2014 studio album by Tord Gustavsen Quartet” 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.

Evidence profile

Reception evidence should be dated and situated: later canonical status may differ sharply from the work’s initial circulation. The source revision retrieved here is dated Apr 18, 2026. The linked authority identifier is Q17003710. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2013.

Critical limits

Rights, attribution and provenance may remain disputed even when a general reference summary presents a stable account. 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

Separate the work, its editions or performances, and its later reception. Catalogue records, publication histories and object files often preserve different parts of that story.

Best used for
  • Identifying works and editions
  • Tracing reception history
  • Finding collection records
Verify next

The original object or edition, catalogue raisonné, performance record, rights file and holding institution.

Three-step research path

  1. Establish the record: confirm the title “Extended Circle”, its source revision and the description used here.
  2. Expand the search: follow Extended Circle primary sources, Extended Circle archive and Extended research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Extended Circle”?
  2. Which edition, object, performance or recording is being described?
  3. Where is authorship, date or provenance documented?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Extended Circle” 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.