Classical guitar

I am a self-taught person in playing guitar.
With all the consequences.
The principal consequence being that I enjoy it quite a lot.

J.S.Bach: Lute Preludium D minor BWV 999, Preludium

J.S.Bach: Partita No.1 for solo violin BWV 1002, Sarabande

J.S.Bach: Lute Suite E minor BWV 996, Courante , Sarabande

And here is a riddle (perhaps not quite easy; hint - it is not played from a score, just by hear and play method).