Re: PINs?!
"Then, one day, I realised I couldn't remember the number. I realised I was actually dialling it automatically, and didn't have a clue what the number was."
Similar to my method, I remember the no. as a rhythm with the no. split up into blocks.
This is often how I seem to construct my passwords, they're rhythmic when I type them out.
No musical logo, so I'll settle for a pint.