1. It's lover level than you expect.
2. Tonality is 0 or 1 # or b sign.
3. Every solo sounds the same, with same lines, composer had no inspiration when made this book.
4. Tempo is the same for every solo, it's completely boring.
5. When it's written swing and backing track goes straight latin... What are you supposed to trust?
Thank You Lennie for disappointment.
Backing tracks are not bad quality i'd say, but that's the only up side.