Quiet simple actually. I have an atmosphere loop on my black box that starts with a crash downshifter. At the end there is an uplifter and it runs for 16 bars. So that way you always have a roadmap wherein you build your music. The drums and midis run at different lengths though. And the mpc sequences are either 8 or 16 long. Takes a while but if you’re used to dj-in, this sounds familiar