Both. I am a classically trained pianist up to Grade 6 from some exam board in the UK, I forget which. I failed the Grade 6 theory as I had to write/transcribe a song and I wrote a 12 bar blues to the "adjusted" words for Bobby Shaftoe. I still remember the explosive next lesson with my music teacher which happened to be my last. Changed to violin and ended up in the string section of a local orchestra until I got caught playing my violin like a banjo at rehearsal and so ended my classical career transforming myself into what I thought was a Jeff Beck clone (1965/6)on guitar. Guitar was all self taught mainly by ear but I used to learn some transcribed sax Jazz solos to make me sound different, now have BIAB
I used to read these on the train! back and forth from London University so that always guaranteed space around me as I fretted the notes on my imaginary guitar making faces and looking like a tramp, sorry hippie!
Ah the memories

My showcase songs

My story