Long Tone Duets is a book of 23 duets designed to challenge player to play perfectly in tune with each other, match tone quality and articulations. Long Tone Duets improves intonation, tone quality, articulation, blending with one another. Long Tone Duets allow players to focus on basic fundamental skills such as tone quality and intonation. There are duets in every major key in addition to patterns such as fourths and chromatic scales. Long Tone Duets can be used as warm-up drills and to refine basic skills. --the publisher