👉 The term "unnamable" is a concept in musical notation that refers to a note or musical phrase that cannot be written down or played on a keyboard. Unlike a musical notation that can be easily transcribed and played, an unnamable note or phrase is not audible to the listener unless they are able to hear it through a specific instrument or environment. In music theory, unnamable notes are often used in counterpoint and arpeggios to create complex harmonies and textures.