abstract: This research will explore the compositional approaches of Henry Cowell and John Cage to reveal piano techniques for the practice and performance of selected works. The discussion will focus on Henry Cowell’s Three Irish Legends and Six Ings, as well as John Cage’s The Perilous Night. An important contribution of Cowell was to further the use of tone clusters, applied in his Three Irish Legends by playing directly with the forearm, fists, and palm. Cowell’s Six Ings employ rhythmic experimentation, particularly in the first, second, and sixth pieces. He also uses tone color to portray specific programmatic features. John Cage greatly advanced the prepared piano from its earliest beginnings, as evidenced significantly in The Perilous Night. The present study will include advice on piano preparation, along with performance challenges and solutions. / Dissertation/Thesis / Doctoral Dissertation Music 2020