Re: your Simply Red post above, Trev, these kind of mind-bending music-related coincidences have happened to me quite often over the years, and often relating to sleep/dreams. I am quite oriented towards chart music ranging from the Sixties to the Noughties, which is quite a broad area of interest, so that might be a significant factor. Two of the more remarkable ones follow. They both made my brain do somersaults in my skull.
First story : Around 1994, I was on holiday on Guernsey in the Channel Islands. I woke up in my holiday apartment having just had a strikingly vivid (and rather amusing) dream that myself and my partner were on a stage doing karaoke (something neither of us has ever done - really not out style. Never even been to anywhere where karaoke was happening). The song we were performing was "Dead Ringer For Love", the 1981 duet by Meat Loaf and Cher. In the dream, we were doing a great job of it, remembering all the lyrics and giving a real show-stopping performance to a very enthusiastic audience. The funniest bit was that we were dressed up in full costume, me as Mr Loaf and my partner in full drag (he would never wear drag!!) as the former Mrs Bono. I have to say I have always liked the song, and would call myself a bit of a Meat Loaf fan. I like Cher too. I woke from the dream thinking "Wow, that was weird! But fun!" It had been so vivid. There was no evidence of a radio playing out in the street or anything like that when I woke up in the peace and quiet of the bedroom. Over breakfast I told my partner about the dream. The weird coincidence came about an hour later. Having booked a boat trip to the island of Sark that day, we decided we had better buy ourselves a couple of light waterproof jackets. In the town (St Peter Port) we found a shop selling that kind of stuff. We walked through the door and there was a radio blasting out "Dead Ringer For Love" - ok, you guessed that - and my brain went pop! as the dream flooded back into my mind. It wasn't as if it was a current hit or anything.
The other one came from only a few years ago. A couple of weeks before Christmas, I woke early in the morning (about 5.30 am) with a song playing in my head like it was a radio. It was perfectly clear, and I kind of recognised it but I couldn't think what it was or why it was in my head. I lay awake with it echoing in my head, and I eventually realised it was the then-current Christmas single by Robbie Williams (called something like 'This Christmas') -** SEE POST SCRIPT BELOW ** which I had heard a few times but I had no idea how or why it had lodged in my brain like that. I went back to sleep and woke up a couple of hours later with another song in my head. Again it was as clear as a bell. It took me a few moments to pin it down. Another Christmas song which I wasn't too familiar with, from a few years earlier this time. It was "It Doesn't Often Snow At Christmas" by the Pet Shop Boys. And again, no clear idea why a song I didn't really know very well at all was clanging around in my skull like it was a radio. Shortly after I woke up, my partner got up to make a cup of tea. I rolled over and clicked the radio on, just in time to catch the last 30 seconds of "This Christmas" by Robbie Williams!! I lay there thinking "that is weird!" as Radio 2's Ken Bruce burbled on for a few minutes, someone else did the traffic report, then Ken announced the next song... "... and here's the Pet Shop Boys with "It Doesn't Often Snow At Christmas".... Obviously it was the run-up to Christmas, so you get Christmas songs on the radio - and in your head - but those two songs?? Songs I was hardly really aware of? In my head while I was asleep? And the was no radio on anywhere in the vicinity.
I have had many similar music-related examples of coincidences over the years, but those two instances really did make me sit up and wonder.
** POST SCRIPT: I just did the research - better late than never - and discovered that the Robbie Williams song was actually called 'Time For Change' and was released in November 2019. It has a chorus which is very catchy, and VERY jingly-Christmassy, which could explain why it had got itself wedged into my cranium so easily after just a couple of hearings!