Zoltan Kodaly said that children can best learn to sing in tune through two-part unaccompanied singing, and this should start at a very early age - possibly even first grade. This set has been developed in the hope of building that skill and developing children's taste for a cappella singing. While intended for classroom use, these songs can also be used with elementary choruses. Of the 27 songs in this collection, 22 have been kept in the pentatonic idiom. The songs appear in approximate order of difficulty.