Riverfield Children’s Chorus is composed of after-school choruses for elementary-age children at Riverfield Country Day School. The children sang at Gilcrease Museum last year during the “Woody at 100” exhibition and celebration, and at Guthrie Green opening ceremonies last year. Many joined the chorus in the spring of their kindergarten year at Riverfield, where their director, Caroline Johnson, is in her 27th year as music teacher. Tulsa folk singer Guy Logsdon, a widely recognized authority on Guthrie, will perform with the choir.