"The real book"!
Do you know about this book?
It is the "real book for jazz standards.
It is in a hand written form with the quality of the chords in short hand. I think it has been around for about ???50-60 years??? You can not buy it in the store! The main objective was to teach new and old jazz players the head and chord progression of standard jazz tunes.
it uses Triangle for maj 7th,9th,13th....
+ for aug. chords, o for dim. chords o with a line through it for half dim.and a - for min chords,