I inherited this pleasant collection of 18 easy trios from my son, Andrew on the conclusion of his recorder playing days with Karola Heißenbüttel of Klingende Runde für jung und alt fame in the late 1970's. All the items can be accompanied by small pieces of percussion and a recording of these items is also available. The booklet is volume 5 in the 12-volume series "Kinder musizieren".