In keeping with both the thread subject and the recent posts about radios, I realise I should probably relate this little tale of something which happened when I was somewhere between 12 and 15 years old (cannot narrow it down more than that).
The house we lived in at the time, a bungalow, had an L-shaped hallway which 'curved' (for want of a better word) around my bedroom. In other words, as one walked along this hallway one would walk first along one inner wall of my room, and then along the other to its door.
Now. To set the scene, I had an alarm clock-radio which was positioned at the corner of these two inner walls.
On one particular occasion I came home from school and made my way along the hallway to my room, all as normal. As I turned the corner (and thus passed where my alarm clock-radio was, on the other side of the wall) a popular song of the time (I can't remember what it was now) popped into my head, but more specifically, it wasn't the beginning of the song, it was part-way in.
As I got to my room a few seconds later, song still playing in my head, I switched on the alarm clock-radio and was rather astonished to find that not only was it playing the song I was playing in my head, but the two songs were perfectly matched up... in other words
it was as if I'd heard the song on the radio as I passed it in the hallway and now the two versions of the song - the one on the alarm clock-radio and the other in my head, were in perfect alignment.
This only happened one time, and there were no other radios playing in the house at the time.
Small and inconsequential I know, but it is what it is.