Czech Canon. Par RAO DOREEN. The Friendship Song, arranged here by Doreen Rao, was first taught to the Glen Ellyn Children's Chorus by their Czechoslovakian hosts, the Jitro Children's Choir. Over 200 children from Czechoslovakia and the United States sang together, exchanging songs on a warm summer morning in the quiet countryside. The Friendship Song has been arranged for 4-part Treble Voices, u…