Blue Lagoon is an easy swing etude taken from Complete Jazz Styles Introductory Etudes, Book 1. The "Extras" folder includes sheet music for alto and tenor sax along with a play-along track.

This is an -medium level Bossa Nova etude taken from, Complete Jazz Styles, Introductory Etudes in Jazz Comprehension, Book 2- EXTRAS include written parts for tenor sax, alto sax, and concert pitch instruments, demonstration and play-along tracks

This one is a medium advanced etude taken from Level 3: Jazz Etudes for Saxophone. I currently only have tenor and alto sax versions.