For whomever’s interest (fans of Zarzuela, the Spanish operetta, evidently): as I was working on my discography of EMI’s budget and mid-price series, I chanced upon a collection that EMI-Spain (Hispavox) released back in 1991 and 1992 (the heydays of the CD), reissuing recordings originally made from 1958 to 1969, and that is very badly represented on the Amazons, even Amazon Spain, probably because the series was circulated before the invention of Amazon and in a country that is aloof from the international marketing circuits. The begining of the series was reviewed in the July-August 1992 issue of the Spanish record magazine Scherzo (pages 86 and 87), which at least helped me to track down the collection (things are easier to find when you know them to exist). I’ve found a few subsequent releases from 1992, not listed in Scherzo.
(For better legibility here is the magnified list)
One additional difficulty is that the series was released in various batches, but for some reason the barcodes of the second series, 7 67428 2 to 7 67434 2, are out of sync with EMI’s normal barcode sequence, and that remains a puzzle to me. Discogs as often was very helpful as it documents a number of those releases – but not all. Here’s the list, and, when CDs are not listed on Amazon, I provide links to Discogs or other websites, for more complete information and cover photos. In some cases, when useful, I provide cover photos. A number of them were reissued in 2000. I haven’t (yet) looked systematically to establish if all were, but initial research suggests that this was not the case. I indicate those I’ve chanced upon.
First batch:
CZS 7 67322 2 (2 CDs) La Zarzuela 1. Amadeo Vives: Doña Francisquita / Bohemios. Teresa Tourné, Pedro Lavirgen, Ana Higueras etc, Orquesta de Conciertos de Madrid, Pablo Sorozábal 1963, 1964 (1991) 077776732220. Reissue EMI 5 74209 2 (2000) 724357420921
Note: reissue has a very elusive presence online, but here is the cover photo: 
CZS 7 67325 2 (2 CDs) La Zarzuela 2. Pablo Sorozábal: La tabernera del puerto / La del Manojo De Rosas. Leda Barclay, Alfredo Kraus, Pilar Lorengar, Renato Cesari, Orquesta de Conciertos de Madrid, Sorozábal 1958, 62 (1991) 077776732527. Reissue EMI 5 74158 2 (2000) 724357415828
CDZ 7 67328 2 La Zarzuela 3. Ruperto Chapi: La Revoltosa / Tomas Breton: La Verbena de la Poloma. Teresa Tourne, Renato Cesari, Orquesta de Conciertos de Madrid, Pablo Sorozábal, Federico Moreno Torroba 1963, 1961 (1991) 077776732824. Reissue EMI 5 74162 2 (2000) 724357416221
CDZ 7 67329 2 La Zarzuela 4. Federico Moreno Torroba: Luisa Fernanda. Teresa Tourné, Pedro Lavirgen, Renato Cesari, Orquesta de Conciertos de Madrid, Moreno Torroba 1960 (1991) 077776732923. Reissue EMI 5 74153 2 (2000) 724357415323
CDZ 7 67330 2 La Zarzuela 5. Pablo Sorozábal: Katiuska. Pilar Lorengar, Alfredo Kraus, Renato Cesari, Orquesta de Conciertos de Madrid, Sorozábal 1958 (1991) 077776733029. Reissue EMI 5 74161 2 (2000) 724357416122
CDZ 7 67331 2 La Zarzuela 6. Federico Chueca: Agua Azucarillos y Aguardien / Federico Chueca y Joaquin Valverde: La Gran Via. Teresa Tourné, Ana Higueras, Renato Cesari, Orquesta de Conciertos de Madrid, Pablo Sorozábal 1963 (1991) 077776733128, reissued EMI 5 74152 2 (2000) 724357415224
CDZ 7 67332 2 La Zarzuela 7. Jose Serrano: La Canción del Olvido. Isabel Castelo, Renato Cesari, Orquesta de Conciertos de Madrid, Pablo Sorozábal 1963 (1991) 077776733227. Reissue EMI 5 74157 2 (2000) 724357415729
CDZ 7 67333 2 La Zarzuela 8. Pablo Luna: Molinos de viento. Teresa Tourné, Renato Cesari, Orquesta de Conciertos de Madrid, Pablo Sorozábal 1963 (1991) 077776733326
CDZ 7 67334 2 La Zarzuela 9. José Serrano: La Dolorosa. Teresa Tourné, Pedro Lavirgen, Orquesta de Conciertos de Madrid, Pablo Sorozábal 1966 (1991) 077776733425. Reissue 5 74216 2 (2000) 724357421621
CDZ 7 67335 2 Antologia de la Zarzuela vol. 1 (compilation of excerpts from the above) (1991) 077776733524
Second batch:
7 67428 2 Antologia de la Zarzuela vol. 2 (1991) 077776742820 (is the barcode indicated at the back although it should have been, following EMI’s barcode sequence, 077776742823)
CDZ 7 67429 2 La Zarzuela 10. Jacinto Guerrero: Los Gavilanes. Dolorès Ripollès, Alicia Armencia, Renato Cesari, Pedro Lavirgen, Orquesta de Conciertos de Madrid, Federico Moreno Torroba 1961 () probable barcode 077776742929 (not found online, no bacover photo located), should be, following EMI’s barcode sequence, 077776742922, not found online (and so forth for the next releases). Reissued EMI 5 74154 2 (2000) 724357415422
Note: I’ve seen many indications online that the reissue dated from 1996. Not so, and I don’t know where that date comes from. Backcover photo clearly shows © 2000 and the CD is part of a barcode sequence whose other installments are from 2000 indeed:
7 67430 2 La Zarzuella 11. Pablo Sorozabal: Don Manolito. Celia Langa, Renato Cesari, Jorge Algorta, Orquesta de Conciertos de Madrid, Pablo Sorozábal 1959 (1991) 077776743025
7 67431 2 La Zarzuela 12. Pablo Sorozabal: Black, el payaso. Leda Barclay, Alfredo Kraus, Renato Cesari, Orquesta de Conciertos de Madrid, Pablo Sorozábal 1958 (1991) 077776743124
7 67432 2 La Zarzuela 13. Pablo Sorozabal: Las de Cain. Teresa Tourné, Ana Higueras, Renato Cesari, Julio Catania, Orquesta de Conciertos de Madrid, Pablo Sorozábal 1965 (1991) 077776743223
7 67433 2 La Zarzuela 14. Pablo Sorozábal: La eterna cancion. Teresa Tourné, Pedro Lavirgen, Ana Maria Higueras, Renato Cesari, Orquesta de Conciertos de Madrid, Pablo Sorozábal 1965 (1991) 077776743322
7 67434 2 La Zarzuela 15. Pablo Sorozabal: Adios A La Bohemia. Pilar Lorengar Renato Cesari, Manuel Gas etc, Orquesta de Conciertos de Madrid, Pablo Sorozábal 1962 (1991) 077776743421 (Note: should have been 077776743424 following EMI’s normal barcode sequence, and that one does yield an entry on Amazon, although without offer. But backcover photo on discogs shows clearly the barcode ending with 421 on back of CD)
7 67443 2 Preludios e Intermedios de Zarzuela : Gimenez, Breton, Chapi, Chueca, Caballero, Barbieri. Orquesta de Coniertos de Madrid, Pablo Sorozabal (1991) 077776744322
The series was continued in 1992:
7 67450 2 La Zarzuela 16. Jacinto Guerrero: Ed Huesped del Sevillano. Dolores Perez, Carlo Del Monte, Orquesta Lirica Española, Federico Moreno Torroba 1969 (1992) 077776745022
7 67451 2 La Zarzuela 17. Jesùs Guridi: El Caserio. Dolores Perez, Carlo Del Monte, Luis Sagi-Vela, Orquesta Lirica Española, Federico Moreno Torroba 1969 (1992) 077776745121. Reissue 5 74156 2 (2000) 724357415620
7 67452 2 La Zarzuela 18. Amadeo Vivès: Maruxa. Dolores Perez, Josefina Cubeiro, Luis Sagi-Vela, Chano Gonszalo, Orquesta Lirica Española, Federico Moreno Torroba 69 (1992) 077776745220. Reissue 5 74212 2 (2000) 724357421225
7 67453 2 La Zarzuela 19. José Maria Usandizaga: Las Golondrinas. Josefina Cubeiro, Isabel Rivas, Vicente Sardinero Ramon Alonso, Orquesta Lirica Española, Federico Moreno Torroba 69 (1992) 077776745329. Reissue 5 74215 2 (2002) 724357421522
7 67454 2 La Zarzuela 20. Francisco Asenjo Barbieri: El Barberillo de Lavapies. Mari Carmen Ramirez, Dolores Perez, Luis Sagi-Vela, Orquesta Lirica Española, Federico Moreno Torroba 69 (1992) 077776745428. Reissue EMI 5 74163 2 (2000) 724357416320
7 67455 2 La Zarzuela 21. Ruperto Chapi: El Rey Que Rabio. Luis Sagi-Vela, Josefina Cubeira, Orquesta Lirica Española, Federico Moreno Torroba 69 (1992) 077776745527
Fourth batch:
7 67470 2 La Zarzuela 22. Jacinto Guerrero: La Rosa del Azafran / Manuel Fernandez Caballero: Gigantes y Cabezudos. Maria Espinalt, Marcos Redondo, Conchita Panades, José Permanyer, Orquesta Lirica Española, F. Delta / Rafael Ferrer 62 (1992) 077776747026. Reissue 5 74155 2 (2000) 724357415521
7 67471 2 La Zarzuela 23. Soutullo y Vert: La Del Soto Del Parral. Maria Espinalt, Juan Gual, Jeronimo Messeguer, Orquesta Lirica Española, Rafael Ferrer 62 (1992) 077776747125
7 67472 2 La Zarzuela 24. Francisco Alonso: La Parranda / José Serrano: Los Claveles. Lolita Rovira, Marcos Redondo, Maria Espinalt, Pablo Civil, Orquesta Lirica Española, F. Delta / Rafael Ferrer (1992) 077776747224
4 67473 2 La Zarzuela 25. Amadeo Vivès: La Generala. Maria Espinalt, Lolita Torrento, Jeronimo Villardel, Orquesta Lirica Española, Rafael Ferrer 62 (1992) 077776747323
To all this I’ll add a 4-CD compilation also from 1992:
CZS 7 67580 2 (4 CDs) Antologia de la Zarzuela (1992) 077776758022
There may be more, but that is, for the moment, my contribution to the art of the Zarzuela.