I suppose I mean that it is not immediately apparent what they are getting at with the name. With a name like “Four Aces”, I imagine there were four of them in the band. And everybody likes Aces, so it’s basically “four nice fellows”. No mystery there. “Them” is borderline, in that it could of course refer to, well, them, the guys in the band, but it does have a sixties vibe to it, as if “them” was somehow meant in more than its literal sense.