This volume is a journey through musics that emerged at the turn of the 20th Century and were neither exclusively tonal nor serial. They fall between these labels as they are metatonal, being both with and after tonality, in their reconstruction of external codes and gestures of Common Practice music in new and idiosyncratic ways.  The composers and works considered  are approached from analytic, cultural, creative, and performance angles by musicologists, performers and composers to enable a deeper reading of these musics by scholars and students alike. Works include those by Frank Bridge, Ferruccio Busoni, Mikalojus Konstantinas Čiurlionis, Rebecca Clarke, John Foulds, Percy Grainger, Mary Howe, Carl Nielsen, Franz Schreker, Erwin Schulhoff, Cyril Scott and Alexander Scriabin.  In the process of engaging with this book the reader, will find an enrichment to their own understanding of music at the turn of the 20th Century.