I’m building new crates for a 10 pm opener this Saturday and tightening transitions around 124–128 BPM, but I want to sharpen the crowd-reading side too. What resources have helped you pick the right next record in the moment — apps, tag workflows in Rekordbox or Engine, Mixed In Key tricks, or even a simple way to log reactions mid-set so I can refine blends later and keep the room breathing?