Example: I want to record a simple rhythm track on track one. Length 4 bars. I then want to record a longer texture on track two. Length 16 bars. Is it possible to do this, or do the two tracks always have to be of the same length? (=Do I have to create my original rhythm track with the length of 16 bars?)
On my RC20XL I had, the rhythm had to be 16 bars, as well. Your overdub cut off and began repeating once the original loop ended and started over.
Maybe the RC30 changed that, but I doubt.... I've been wrong before, though.