It wasn't even just disco, that was a general fashion back then. I remember Trevor Horn writing in his book, labels asked him for 12" mixes of singles he produ

It wasn't even just disco, that was a general fashion back then. I remember Trevor Horn writing in his book, labels asked him for 12" mixes of singles he produced in the 80's. And it was mostly new wave and pop stuff. I guess the purpose was the same though, to produce a more danceable version.