Birtwistle_1965_Tragoedia.flac:a07d253985d54974237ca5314b3857a5
Birtwistle_1968_Nomos.flac:ee6915af581890e48d6b25174ef23c73
Birtwistle_1971_Imaginary_Landscape.flac:64a0f3bc1f9e0204b6bec5ebcfc27dd9