Got about as far as learning that middle C is the note by the keyhole on the piano that we had in the house (my dad was a reasonable pianist, probably influenced by my grandfather having been an organ builder). Got about as far as learning that Twinkle Twinkle Little Star played the way I did it on vioin sounded more like a cat being tortured. Then my brother got an acoustic guitar and I kept borrowing it and learnt a bit, then got my own electric (a Vox Stroller) and learnt a bit more. Started playing rhythm guitar with a band at school, playing Glenn Miller stuff.
I'd got as far as a Les Paul copy when I went to university, and joined up with a few others in the same hall of residence to form a band. As the other guitarist was a bit better than me and we needed a bassist and the Fender Soundhouse had just had a fire and Hayman had gone out of business, I bought lots of bits of Hayman 40/40 and put it together. Played a gig that actually got us some money then dropped out of university.
Took me a little while after that to restart musically, and I finished up on bass as my main instrument. I still play guitar too, and own a keyboard (which I am by no means proficient on, and there isn't a keyhole so I don't know where middle C is).