OpenTwo archives, queried live.
Every record below comes from The Met or Smithsonian Open Access and was filtered on that archive’s own rights field before it reached this page. 24 shown for “A Vocal Concert” — 64 records examined, 38 dropped by the rights gate.
Archives queried 2026-09-02 16:22 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Concert from a set of Tapestries "After the Indian Manner"
John Vanderbank · After 1690
A Vocal Concert
Artist not stated in the record · ca. 1780–1805
Sō Sām Sāi
Artist not stated in the record · 19th century
A Vocal Concert
Artist not stated in the record · ca. 1760–1770
A Concert
Louis Licherie de Beurie · ca. 1679
Ev'rybody ought to know how to do the tickle toe lyric by Otto Harbach ; music by Louis A. Hirsch
Hirsch, Louis A (Louis Achille) 1881-1924 · 1918
Vocal Concert, from "Metamorphoses of the Day"
J. J. Grandville · 1829
Photographic postcard to Dr. Arthur Melvin Townsend from Emma Azalia Hackley
Artist not stated in the record · November 4, 1915
The Concert
Antoine Jean Duclos · 1774
Program from a concert featuring Roland Hayes
Artist not stated in the record · 1953
Le Concert
Antoine Jean Duclos · 1774
Interior of the New Concert Hall, Venice
Artist not stated in the record · 1760–1790
Cat Concert
Jacques Dassonville · ca. 1640–70
Aeroplane duet Kitty, Donald lyric by Grant Stewart ; music by Henry Berény
Berény, Henri 1871-1932 · 1911
Concert champêtre
Girolamo Romanino · ca. 1520–30
Coupe et Profil de la Salle de Concert pris sur la longueur
Jean-François de Neufforge, Flemish, 1714–1791 · 1768
Concert Champêtre
Jean-Baptiste Joseph Pater · ca. 1734
Plan d'une Salle de Concert
Jean-François de Neufforge, Flemish, 1714–1791 · 1768
A Musical Party
Gabriël Metsu · 1659
Façade de la Salle de Concert
Jean-François de Neufforge, Flemish, 1714–1791 · 1768
Cavalry Engagement (recto); Concert of Angels (verso)
Francesco Allegrini · 1624–63
Black velvet skirt worn by Marian Anderson for her 1939 Lincoln Memorial concert
Unidentified · 1939
The Russian Concert (Le Concert Russien)
René Gaillard · ca. 1768
Jenny Lind Concert Ticket, October 18, 1850
Artist not stated in the record · 1850
Where these records came from.
Two archives are wired, and only two. Each one is filtered on its own rights field — never on a title match, and never on the presence of an image file.
- The Met Collection API (Open Access)Rights field:
isPublicDomain. 247 matched · 24 examined · 11 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.12 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 1765493 matched · 40 examined · 27 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.12 shown
These figures describe the pass run at 2026-09-02 16:22 UTC, during this request. A completed pass is kept for 24 hours and replayed for an identical search, which is what keeps repeated queries inside Smithsonian’s 30-requests-per-hour allowance. A pass in which either archive failed to answer is never kept — an outage must not be replayed as though it were a finding about the catalogue.
Wikimedia Commons and the Library of Congress are deliberately not wired. Wikimedia was confirmed, on a live query, to return CC-BY material inside the same result set as genuine public domain works, and filtering it safely has not been designed yet. loc.gov was blocked by bot detection during the source evaluation, so its rights vocabulary has never been observed — and nothing here is built on a field nobody has read.
An image file is a rights claim. It never travels without its field.