Analogue-sequencer

> Can you have one CK pattern, being recorded/played over the 
> top of a number of P3 patterns, or do CK and P3 patterns both 
> have to be the same length?

Patterns can all be different lengths.
They each start at the beginning, and loop at their own length. P3 patterns
have an optional bar loop, so they can have a start section that only plays
once, followed by a looping section.
If you are in song mode (advancing through scenes) each scene's length
determines when the tracks will advance to the next set of patterns.
Ck patterns have their length set in bars.
P3 patterns have up to 16 bars, but each bar can be set with a different
numnber of steps, so they can end up with lengths that aren't a whole number
of bars.
There's a gbar-sync option for each bar to force them to fit into the global
bar size.

Cheers,
Colin