On a Citronic Thames in the early 80's twin deck unit, yes 7" and 12" discs. My friend Steve http://www.stevespahire.co.uk/data/s...Index?OpenForm used to do a disco at Gt Yarmouth, rollerdisco,and on his way home most Fridays, called in to see me at the club where I worked. He always did a mix session and I listened and watched and then tried myself. After many attempts I got it right and really do miss mixing vynil, it was great.
Must call in and see him again as he lives just up the raod from me but is seldom home due to his work at concerts with 45Kw pa system.