Breitkopf & Härtel Stimmspaß mit dem Singfrosch, Early Musical Education, Singing school for children aged 4 - 8 years, By Stefanie Fersch, ISBN 9783765104510, publisher's no. BV 451, Format: 21 x 21 cm, 52 Pages, Hardback edition, In German, Including CD with audio book and sing-along recordings