Orchestre Philharmonique de Liege
Pierre Bartholomée, conductor
Cello Octet Conjunto Iberico
Elias Arizcuren, conductor
Here is the original LP cover of Choros XII:
This is an older recording than I had first realized. According to the Cypres website, the disc was recorded in 1980 (Choros #12), 1986 (Choros #7), and 1999 (BB #1).
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