ðɪ ˈælbəm wʌz ɹˌiːɹᵻlˈiːst ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti tˈuː baɪ sˈɪlvə skɹˈiːn ɹˈɛkɚdz æz ˈɜːθʃɑːk klˈæsɪk mjˈuːzɪk fɹʌmðə bˌiːbˌiːsˈiː ɹˌeɪdɪoʊfˈɑːnɪk wˈɜːkʃɑːp vˈɑːljuːm wˈʌn, wɪð bˈoʊnəs tɹˈæks ɪŋklˈuːdɪŋ "ðə wˈɜːldz ʌv dˈɑːktɚ hˈuː", ɐ tɹˈæk ɹᵻkˈoːɹdᵻd baɪ mˈɪlz æz ɐ bˈiːsˈaɪd tə dˈʌdli sˈɪmpsənz nˈaɪntiːnhˈʌndɹɪd sˈɛvənti θɹˈiː "mˈuːnbeɪs θɹˈiː" sˈɪŋɡəl, wˌɪtʃ fˈiːtʃɚd ɐ mˈɪks ʌv mjˈuːzɪk wɪð sˈaʊnd ɪfˈɛkts fɹʌm plˈænɪt ʌvðə dˈeɪləks bᵻfˌoːɹ fˈɑːloʊɪŋ wɪð sˈɪmpsənz "mˈæstɚz θˈiːm" ænd fˈɪnɪʃɪŋ wɪð mjˈuːzɪk fɹʌmðə sˈɪɹiəl ðə mˈaɪnd ʌv ˈiːvəl .
The album was re-released in 1992 by Silva Screen records as Earthshock - Classic Music From The BBC Radiophonic Workshop Volume 1, with bonus tracks including "The Worlds of Doctor Who", a track recorded by Mills as a B-side to Dudley Simpson's 1973 "Moonbase 3" single, which featured a mix of music with sound effects from Planet of the Daleks before following with Simpson's "Master's Theme" and finishing with music from the serial The Mind of Evil .