Complex sentence: In its heyday, thelate 70's and early 80's, Trocadero Transfer was regarded as the best hard-core--and largely gay--disco on the West Coast, among the half-dozen musical style-setters in the country.
Split into simpler sentences: In its heyday, the late 70's and early 80's, Trocadero Transfer was regarded as the best hard-core--and largely gay--disco on the West Coast. It was among the half-dozen musical style-setters in the country.