Listening with the eyes

The practice of “listening with the eyes” has a remarkably long history, which in the Western tradition of notated music can be traced back to at least the 16th century. The usage of musical figures or extramusical references leading to literature or fine art or even drawing with melodic lines could be considered a common effect of this practice. Music history, after intermedia and multimedia development in the 20th century, is now heading towards code-based performance. The crucial questions are: What is being performed: music, notation, or the process of creation? And who is the performer and who is the audience