Geared perfectly for young, changing voices, this series was written specifically for choirs that need simple rhythmic exercises with a sequential progression of solfège skills. To accommodate choirs with changing voices (cambiata), each mixed choir version contains one voice part that stays within the cambiata range. This five volume series is available for SATB, SA(T)B, SAB, SSA, TCB, TTB, and TBB editions. Each edition is offered in a fully reproducible digital download format for continued use year after year.