Marulanda, Carmen - Flute Duets I - 5 easy original methodical duets

This book is a collection of five easy duets for flute, based on Latin-American genres.
Each piece has a specific purpose, but the overall objective is the interaction with rhythms and harmonies aiming to train good musical reflexes by gradually improving intonation, technique and musicianship.
G, D, F - working Sound, scales, arpeggios, thirds, legato.