This mix started with a simple idea: I just loved the funny effect of playing the chorus of 'You are lying' right after 'Baby believe me' (first two songs in the mix, by Blue System).
After that, I kept adding songs to that combination, keeping only the most 'juicy' part of the other Retro songs I added from my collection.
I rehearsed the chaining until I had it right, and I was able to play and mix all the songs in one session.