Yeah, this - from what I recall - is an in the room, but not amongst the musicians, kind of mix. I sold mine on to raise funds for something else. The sound quality was nice, IIRC, but by no means a hard panned to the rears mix (and maybe that wouldn't have worked, who knows?). My initial instinct is to aim for five based mostly on the mix, and I didn't love the music, but that feels a little low, and I made the mistake of looking at the other vote scores and I'm feeling the peer pressure not to be the lowest!
I actually saw them (the surviving ones, plus others, I guess) perform live in the UK some years back. The double bass player was walked on, and from what I could see/can recall he stood up for his time on the stage! It appeared to be Cuban law that if you were not playing your instrument you needed to be dancing. Good gig.