A recording of both Xenakis' Oresteïa and his Kassandra (now the second section of his Oresteïa) made at a performance during the Festival Musica de Strasbourg. This recording was made shortly after both pieces were performed at the Gibellina Festival in Sicily, using the version adapted by Xenakis for those performances. See productions 495 (Oresteïa) and production 7249 (Kassandra).
The liner notes say that the Oresteïa must include Kassandra, but that Kassandra can be performed separately.