Helmut Friedrich Lachenmann is a German composer of contemporary music. In his 1980 work for piano, Child's Play, Lachenmann develops one of his own signature concepts, musique concrète instrumentale, in which he uses the "standard" (not prepared) piano in non-conventional and innovative ways to explore new sounds and techniques. This dissertation is a pedagogical study that provides a teaching guide for educators who would like to use Child's Play as an introduction to some of the sounds and techniques of contemporary music for their late intermediate students. In order for educators to effectively guide their students through Child's Play, they should understand the sonorities of musique concrète instrumentale as well as the extended techniques it requires. This dissertation addresses those needs through three principal means. First, it introduces Lachenmann's musique concrète instrumentale and classifies the various sonorities into three types: descriptive, contrasting, and extended. Second, it analyzes and discusses technical elements in the cycle, including notational considerations, pedaling, and sound effects. Last, the dissertation provides pedagogical suggestions to help students master these technical elements. By studying and playing this piece, students not only become intimately familiar with some of the many sounds they are able to produce on the piano, but they also gain experience in playing contemporary techniques and repertoire and familiarity with nontraditional notation. This study of Lachenmann's Child's Play will provide educators with a guide for teaching this valuable work to their late intermediate students.

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