2011 is the Decca release date (478 2551, released 20 June 2011; MusicBrainz release 21a88ab6-2570-4c35-af9e-702c69fb2b39, barcode 028947825517), not the performance. Lucerne Festival's own performance archive (442hz.com/de/ensembles/Lucerne_Festival/werkarchiv/, search Fidelio + Abbado) shows Fidelio under Abbado only on 12 and 15 August 2010 in the KKL Konzertsaal, with exactly this cast: Mattei Don Fernando, Struckmann Don Pizarro, Kaufmann Florestan, Stemme Leonore, Fischesser Rocco, Harnisch Marzelline, Strehl Jaquino, Arnold Schoenberg Chor, halbszenisch, spoken dialogue newly arranged by Tatjana Guerbaca (which is why the rip has narration tracks). Day left unset: the issue draws on two nights. The archive credits the Lucerne Festival Orchestra alongside the Mahler Chamber Orchestra that forms its core, and Decca bills the Lucerne Festival Orchestra.

Migration: a zero year, month, day or OperaClass id meant the value was unknown, not that it was zero. Set to null.

Top billing: Leonore/Fidelio is the title role and Nina Stemme was not billed at all, while Peter Mattei (Don Fernando, one scene at the end) was. Decca bills this set as Nina Stemme, Jonas Kaufmann, Claudio Abbado (MusicBrainz release 21a88ab6-2570-4c35-af9e-702c69fb2b39 artist credit); Lucerne Festival archive lists Stemme as Leonore. Promoting Stemme and demoting Mattei (portrayal 86059) leaves Leonore, Florestan and Don Pizarro billed.

Top billing: Don Fernando is a short role in the final scene and was billed over the title role. Demoted in favour of Nina Stemme, Leonore (portrayal 86053). See the note on that portrayal.