ɪnðə pˈiəɹɪəd spˈænɪŋ nˈaɪntiːnhˈʌndɹɪd sˈɛvənti sˈɛvənti fˈaɪv, ðeɪ ɹᵻlˈiːst ˈeɪt stˈuːdɪˌoʊɹᵻkˈoːɹdᵻd ˈælbəmz ænd ˌʌndɚtˈʊk sˈɛvəntˌiːn tˈʊɹz ʌv jˈʊɹɹəp, ðə jˌuːˈɛs ænd kˈænədə.
In the period spanning 1970–75, they released eight studio-recorded albums and undertook 17 tours of Europe, the US and Canada.