ɪt fˈiːtʃɚd mjˈuːzɪk kəmpˈoʊzd æt ðə wˈɜːkʃɑːp ɪnðə pˈiəɹɪəd sˈɪns ðə pɹˈiːviəs kˌɑːmpɪlˈeɪʃən, bˌiːbˌiːsˈiː ɹˌeɪdɪoʊfˈɑːnɪk wˈɜːkʃɑːp twˈɛnti wˈʌn.
It featured music composed at the Workshop in the period since the previous compilation, BBC Radiophonic Workshop - 21.