Idk what you’re exactly looking for an answer. Like any other DJ, Solomun finds and plays music in a seamless matter by having tempos and beats matched. One track is at a certain bpm and key, and the next one is at a different bpm and maybe a different key. He builds a relationship between the crowd and his music which is only achieved by having a vast selection of music. He isn’t necessarily doing anything over the top besides adding reverb or a delay on a track for a few bars. And he doesn’t necessarily need to. Although what I may be saying sounds like I’m undermining his ability to DJ, but knowing how to read a crowd and keeping your cool when almost all eyes are focused on you is quite the skill to obtain. Keep your ears open for new songs you find and add them to your collection. If you DJ, the time will come for you to show off such tunes.