Dreams about dreams (or explicitly about memories)

I recently woke up from a dream in which I was talking to a friend (who is now, actually, several years dead), about a memory I had of attending a Fleetwood Mac concert (the original, bluesy Fleetwood Mac, with Peter Green) in the back yard of another long-ago friend. I was trying to ascertain whether he also remembered the concert, or if it was something I had dreamed. I was aware, in the dream that such a concert in someone’s back yard was an unlikely event, but the memory (in the dream) seemed very vivid and real.

One of the (slightly) more recent incarnations of Fleetwood Mac (i.e., the one with Buckingham and Nicks) also appeared very briefly in the framing dream (not playing), and I tousled the hair of one of the female singers.

It is hard, now, to be sure, but I rather think the memory/dream of the concert may be a memory of an actual dream I had years ago. I am fairly sure that some of the more vivid images I have in my memory come from long-ago dreams rather than actual events. However, this memory of a dream, if it is one, is not one I recall having recalled to mind for a very long time. I was not thinking about it before the current dream. Neither was I thinking about Fleetwood Mac or either of the old friends involved.

I don’t want to derail my own thread with this, but perhaps it is also worth adding that I am not a particularly big fan of Fleetwood Mac, although I do prefer their original incarnation to their later, very different, and now better known, ones. Also, I have not recently heard any of their music. I have seen them in concert a couple of times, but it was about 40 years ago, and the circumstances, as I recall them, were very different from those in the dream-memory of the concert. (And the incarnations I saw were neither quite the original lineup - Peter Green had already left, and Christine McVie and, the second time, Bob Welch had joined - nor the later, more successful one: i.e., neither of the lineups that were referenced in my recent dream).

Anyway, does anyone else recall having dreams that were about dreams, or that were explicitly about memories (as opposed to containing or being influenced by memories) or the relation between dreams and memories?

I can recall (no details about) a dream which picked up where another (several years old) dream had left off. At least, it was my impression upon waking that I’d had the previous dream a long time ago and that it was odd to pick it back up like an old, partially read book. But the memory of the old dream may have been part of the new one.