Hello, as I wrote in another post, I am trying to get back into music after many years of stagnation. I have resumed self-taught study after about 6 years. At that time, I was taking private lessons which were limited to studying pieces, solfège and singing, followed by basic musical knowledge. Currently, I am dedicating myself fully to developing technique by playing Hanon and approaching Czerny and Heller. I would like to be able to tackle some music theory books. Let me explain. I would like to develop my musical ear and also learn improvisation (forgive my imprecise terms) and I was wondering if it were necessary to study something regarding harmony.
Since my knowledge is almost non-existent, could you recommend some good theory books?
I have always dedicated myself to the study of classical music, which I consider unsurpassed, but I do not deny having a strong attraction to Jazz, Blues (and Boogie), which however I have always seen as unreachable. Informing myself a little, I discovered the enormous theoretical gap present and concluded that I needed "some" more musical concepts. I hope you can help me.
Thank you in advance