Euphonium BC book for Band Intonation Chorales This book of chorales is the sequel to Band Intonation Exercises. The only exercises designed to teach the fundamentals of tuning along with exercises to practice those techniques. These chorales are the perfect tool to apply the skills taught in BIE but in any key Major or Minor, from advance to beginner level. There are a total of 264 chorales, with hints and tips to help your band find troubled notes and chords. Band Intonation Chorales also shows how to apply Just Intonation to make chords more beautiful and sonorous.