Hello people. I give it a shot.
My Music
Mix of Electronica, “IDMish”, trip-hop, downtempo
My Gear
Octatrack, A4 and microbrute, but Live-Sets were Octatrack only so far
My Octatrack Setup
Track 1: Drums loops
Track 2: Bass parts
Track 3: Melodic parts
Track 4: Used for transitions.
Track 8: Master track. Using freeze delay effects.
BANKS PARTS PATTERNS AND SCENES
Banks are the songs. One Bank per song.
I rarely use parts.
Patterns are the individual parts of my songs (Intro, build up, main part etc.)
Scenes: One scene for the transition trick, other scenes with lp filter, hp filter, Big Reverb, Sample reducer and bitcrusher for the drums, Retrigger for the drums etc.
How I prepare the set
I tried to find a way to transfer my old Ableton live sets into the Octatrack. One could could argue about how “live” this set is, but that’s my way of doing it.
I bounce Drums, Bass and melody (synths, guitars etc.) of my studio tracks into indiviual audio tracks. But not for the whole track, but for each indiviual part of the song. Any change in the drum pattern or melody is a new stem.
I lock each sample from pool (static machine) to the first trig of it’s pattern. Often I use samples which are longer than 4 bars, so I use the time divider individual for each track.
How I Play
Kind of a DJ Style. My songs are broken down to it’s individual parts, so I can decide when It’s time for the next part and how long it will last. I can mute drums, bass or melody depending on how my mute is at that moment.
I apply a lot of effects with the scenes and using the freeze delay.
I make heavy use of the arranger:
I wanted to get a ableton kind of clip triggering. I pre program the patterns (which are the song parts) with it’s corresponding bank in the arranger. You can choose 64 repeats for every pattern in the arranger. So the pattern loop over and over and i can decide when to change. It’s like changing scenes in ableton live. I also also pre program the tempo for my individual songs in the arranger, because the bpm variy quite strong (from about 90 to 135 bpm).
And I also pre program some scene actions, for example I can program that when I do a transition, the next song starts filtered down and with big reverb and I then I open the filter and reduce the verb to start the song. Just as an example.
My Transitions
Making use of the well known transition trick by Tarekith. I have a flex machine here, assigned to a recorder buffer with a trig on the first step. I activate sampling manually, and record one or two bars.
I use the same scene for transitions in every track. Track 4 is quiet with the crossfader on the left, and active when the crossfader is on the right, but all other tracks are quiet then. Most of the time I use the transitions for heavy effect use, pitch it, reverse it applying effetcs etc.
A lot of words I know 
I tried to be clear. Interesting to read how you guys do it, great thread idea.
Here is a little video, where I play two songs with transition of one of my sets.
Cheers