Live, Opernhaus Zurich, 20 May 1992. The only witness is the cast sheet that travelled with the tape, in the folder as "Rossini - SEMIRAMIDE - Zurich 20-V-1992 [benmeta].doc" (a Word document typed by the distributor, not a house programme), which gives all seven roles: Gruberova, Kallisch, Palacio, Holl, Muscat, Will, Groschel, "Chor und Orchester des Opernhauses Zurich", cond. Nello Santi. Nothing outside the folder corroborates it and no source contradicts it either: the Opernhaus Zurich publishes no historical performance archive and none survives in the Wayback Machine; operadis lists 31 Semiramide recordings and none from Zurich, but it excludes private recordings by policy; the Journal de Geneve / Gazette de Lausanne / Le Nouveau Quotidien corpus at letempsarchives.ch (complete to 1998) has 72 articles mentioning Semiramide and none of them from May or June 1992; a swisscovery SRU search for a Zurich Semiramide programme returns nothing. What does hold up is internal consistency: Gruberova was a permanent member of the Zurich ensemble from 1986, Santi was the house music director, and Kallisch, Palacio, Holl, Jacob Will and Werner Groschel were all singing there in that period.

Live, Opernhaus Zurich, 20 May 1992. The only witness is the cast sheet that travelled with the tape, in the folder as "Rossini - SEMIRAMIDE - Zurich 20-V-1992 [benmeta].doc" (a Word document typed by the distributor, not a house programme), which gives all seven roles: Gruberova, Kallisch, Palacio, Holl, Muscat, Will, Groschel, "Chor und Orchester des Opernhauses Zurich", cond. Nello Santi. Nothing outside the folder corroborates it and no source contradicts it either: the Opernhaus Zurich publishes no historical performance archive and none survives in the Wayback Machine; operadis lists 31 Semiramide recordings and none from Zurich, but it excludes private recordings by policy; the Journal de Geneve / Gazette de Lausanne / Le Nouveau Quotidien corpus at letempsarchives.ch (complete to 1998) has 72 articles mentioning Semiramide and none of them from May or June 1992; a swisscovery SRU search for a Zurich Semiramide programme returns nothing. What does hold up is internal consistency: Gruberova was a permanent member of the Zurich ensemble from 1986, Santi was the house music director, and Kallisch, Palacio, Holl, Jacob Will and Werner Groschel were all singing there in that period.

Live, Opernhaus Zurich, 20 May 1992. The only witness is the cast sheet that travelled with the tape, in the folder as "Rossini - SEMIRAMIDE - Zurich 20-V-1992 [benmeta].doc" (a Word document typed by the distributor, not a house programme), which gives all seven roles: Gruberova, Kallisch, Palacio, Holl, Muscat, Will, Groschel, "Chor und Orchester des Opernhauses Zurich", cond. Nello Santi. Nothing outside the folder corroborates it and no source contradicts it either: the Opernhaus Zurich publishes no historical performance archive and none survives in the Wayback Machine; operadis lists 31 Semiramide recordings and none from Zurich, but it excludes private recordings by policy; the Journal de Geneve / Gazette de Lausanne / Le Nouveau Quotidien corpus at letempsarchives.ch (complete to 1998) has 72 articles mentioning Semiramide and none of them from May or June 1992; a swisscovery SRU search for a Zurich Semiramide programme returns nothing. What does hold up is internal consistency: Gruberova was a permanent member of the Zurich ensemble from 1986, Santi was the house music director, and Kallisch, Palacio, Holl, Jacob Will and Werner Groschel were all singing there in that period.

Live, Opernhaus Zurich, 20 May 1992. The only witness is the cast sheet that travelled with the tape, in the folder as "Rossini - SEMIRAMIDE - Zurich 20-V-1992 [benmeta].doc" (a Word document typed by the distributor, not a house programme), which gives all seven roles: Gruberova, Kallisch, Palacio, Holl, Muscat, Will, Groschel, "Chor und Orchester des Opernhauses Zurich", cond. Nello Santi. Nothing outside the folder corroborates it and no source contradicts it either: the Opernhaus Zurich publishes no historical performance archive and none survives in the Wayback Machine; operadis lists 31 Semiramide recordings and none from Zurich, but it excludes private recordings by policy; the Journal de Geneve / Gazette de Lausanne / Le Nouveau Quotidien corpus at letempsarchives.ch (complete to 1998) has 72 articles mentioning Semiramide and none of them from May or June 1992; a swisscovery SRU search for a Zurich Semiramide programme returns nothing. What does hold up is internal consistency: Gruberova was a permanent member of the Zurich ensemble from 1986, Santi was the house music director, and Kallisch, Palacio, Holl, Jacob Will and Werner Groschel were all singing there in that period.

Live, Opernhaus Zurich, 20 May 1992. The only witness is the cast sheet that travelled with the tape, in the folder as "Rossini - SEMIRAMIDE - Zurich 20-V-1992 [benmeta].doc" (a Word document typed by the distributor, not a house programme), which gives all seven roles: Gruberova, Kallisch, Palacio, Holl, Muscat, Will, Groschel, "Chor und Orchester des Opernhauses Zurich", cond. Nello Santi. Nothing outside the folder corroborates it and no source contradicts it either: the Opernhaus Zurich publishes no historical performance archive and none survives in the Wayback Machine; operadis lists 31 Semiramide recordings and none from Zurich, but it excludes private recordings by policy; the Journal de Geneve / Gazette de Lausanne / Le Nouveau Quotidien corpus at letempsarchives.ch (complete to 1998) has 72 articles mentioning Semiramide and none of them from May or June 1992; a swisscovery SRU search for a Zurich Semiramide programme returns nothing. What does hold up is internal consistency: Gruberova was a permanent member of the Zurich ensemble from 1986, Santi was the house music director, and Kallisch, Palacio, Holl, Jacob Will and Werner Groschel were all singing there in that period.

Live, Opernhaus Zurich, 20 May 1992. The only witness is the cast sheet that travelled with the tape, in the folder as "Rossini - SEMIRAMIDE - Zurich 20-V-1992 [benmeta].doc" (a Word document typed by the distributor, not a house programme), which gives all seven roles: Gruberova, Kallisch, Palacio, Holl, Muscat, Will, Groschel, "Chor und Orchester des Opernhauses Zurich", cond. Nello Santi. Nothing outside the folder corroborates it and no source contradicts it either: the Opernhaus Zurich publishes no historical performance archive and none survives in the Wayback Machine; operadis lists 31 Semiramide recordings and none from Zurich, but it excludes private recordings by policy; the Journal de Geneve / Gazette de Lausanne / Le Nouveau Quotidien corpus at letempsarchives.ch (complete to 1998) has 72 articles mentioning Semiramide and none of them from May or June 1992; a swisscovery SRU search for a Zurich Semiramide programme returns nothing. What does hold up is internal consistency: Gruberova was a permanent member of the Zurich ensemble from 1986, Santi was the house music director, and Kallisch, Palacio, Holl, Jacob Will and Werner Groschel were all singing there in that period.

Live, Opernhaus Zurich, 20 May 1992. The only witness is the cast sheet that travelled with the tape, in the folder as "Rossini - SEMIRAMIDE - Zurich 20-V-1992 [benmeta].doc" (a Word document typed by the distributor, not a house programme), which gives all seven roles: Gruberova, Kallisch, Palacio, Holl, Muscat, Will, Groschel, "Chor und Orchester des Opernhauses Zurich", cond. Nello Santi. Nothing outside the folder corroborates it and no source contradicts it either: the Opernhaus Zurich publishes no historical performance archive and none survives in the Wayback Machine; operadis lists 31 Semiramide recordings and none from Zurich, but it excludes private recordings by policy; the Journal de Geneve / Gazette de Lausanne / Le Nouveau Quotidien corpus at letempsarchives.ch (complete to 1998) has 72 articles mentioning Semiramide and none of them from May or June 1992; a swisscovery SRU search for a Zurich Semiramide programme returns nothing. What does hold up is internal consistency: Gruberova was a permanent member of the Zurich ensemble from 1986, Santi was the house music director, and Kallisch, Palacio, Holl, Jacob Will and Werner Groschel were all singing there in that period.

Live, Opernhaus Zurich, 20 May 1992. The only witness is the cast sheet that travelled with the tape, in the folder as "Rossini - SEMIRAMIDE - Zurich 20-V-1992 [benmeta].doc" (a Word document typed by the distributor, not a house programme), which gives all seven roles: Gruberova, Kallisch, Palacio, Holl, Muscat, Will, Groschel, "Chor und Orchester des Opernhauses Zurich", cond. Nello Santi. Nothing outside the folder corroborates it and no source contradicts it either: the Opernhaus Zurich publishes no historical performance archive and none survives in the Wayback Machine; operadis lists 31 Semiramide recordings and none from Zurich, but it excludes private recordings by policy; the Journal de Geneve / Gazette de Lausanne / Le Nouveau Quotidien corpus at letempsarchives.ch (complete to 1998) has 72 articles mentioning Semiramide and none of them from May or June 1992; a swisscovery SRU search for a Zurich Semiramide programme returns nothing. What does hold up is internal consistency: Gruberova was a permanent member of the Zurich ensemble from 1986, Santi was the house music director, and Kallisch, Palacio, Holl, Jacob Will and Werner Groschel were all singing there in that period.