A musical notation can either describe an event that has already happened or prescribe an event to be performed by the reader. No Collective's (You Nakai. et al.) Concertos, the second book in the Emergency Playscript Series, uses both description and prescription to notate a musical performance. The original Concertos premiered in 2008 in Tokyo, performed by four musicians, a dog, a bird, and several guests. The playscript evokes the original piece while embedding the experience of reading the playscript into any subsequent performances of the piece.

"The hierarchy between these three layers is intentionally confounded: while the text explicates the pre-text and the scores, the pre-text embodies the scores and the text, and the scores determine the composition and performance of the text and the pre-text."