replied to your photo
What book is this? It’s too chromatic for a lot of things but it’s not the Shostakovich preludes+fugues
It’s a weird Carlos Chavez book I found at the used bookstore. It’s really old!
These pieces are delightfully discordant and have a really modern feel to them. My favorite is probably No. 2, Vivace- although I can’t play it at tempo at all yet.