These standard sight-singing books have been favorites with choral directors and classroom teachers since their first publication in 1933. Each volume is a collection of folk tunes from around the world, carefully selected and organized to lead the student from simple rhythms gradually to more difficult ones. Intended to be sung without words (to a single syllable such as la, or to solfa), these books provide training in the full gamut of keys as they teach sensitivity to dynamics and phrasing.