It's part two of DM Matt's Actual Prep series. You can listen to part one, in which Matt designs an adventure "live," here.
DM Matt reflects on how to use your few moments before a game session to prep, what to adjust on the fly, and how to reflect on your adventures critically.
Also, the adventure that Matt and Rob wrote based on these episodes is available for purchase on the DMsGuild!
Links:
Music:
Pac Div - Roll the Dice
Reba McEntire - Why Not Tonight
The J. Geils Band - Freeze-Frame
Bobby Bare - Dropkick Me, Jesus