Complex sentence: "La Belle Epoque" was a French based all girl group who released a disco cover of the Los Bravos 1960s hit Black is Black, which was a big hit in Europe and Australia.
Split into simpler sentences: La Belle Epoque was a French based all girl group who released a disco cover of the Los Bravos 1960s hit Black is Black. The remake was a big hit in Europe and Australia.