In this book, Barbara Ellison and Thomas B. W. Bailey lay out and explore the mystifying and evanescent musical territory of 'sonic phantoms': auditory illusions within the musical material that convey a 'phantasmatic' presence. Structured around a large body of compositional work developed by Ellison over the past decade, sonic phantoms are revealed and illustrated as they arise through a diverse array of musical sources, materials, techniques, and compositional tools: voices (real and synthetic), field recordings, instrument manipulation, object amplification, improvisation, and recording studio techniques. Somehow inherent in all music--and perhaps in all sound--sonic phantoms lurk and stalk with the promise of mystery and elevation. We just need to conjure them.