Bayan da aka fara da ballads, sai suka saurari umurnin Mardin da Stigwood, kuma sun kirkiro karin waƙoƙin kiɗa na kiɗa, ciki har da na biyu na Amurka, "Jive Talkin'", tare da US No. 7 "Nights on Broadway". Ƙungiyar ta ji daɗin sabon sauti. A wannan lokacin jama'a sun yarda da aika da LP Main Course zuwa taswirar. Wannan kundi ya haɗa da waƙoƙin farko na Bee Gees inda Barry yayi amfani da falsetto, wani abu da zai zama alamar kasuwanci ta band. Wannan shi ne kuma kundi na farko na Bee Gees da ke da guda biyu na Amurka 10 tun lokacin da 1968 ta Idea. Main Course kuma ya zama kundi na farko na R & B. Tambaya: Mene ne salon kiɗa na band din bayan da aka karɓi shawara daga Mardin da Stigwood?
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