The earliest Medieval music did not have any kind of notational system.

The neumatic notational system, even in its fully developed state, did not clearly define any kind of rhythm for the singing of notes.

To score music, light, poetry, dance, with a single notational system, thus pressing a unitary vision.

All with no written language or notational system or even a telescope, much less a computer.

His main contribution was to the notational system.

In its most complete and succinct iteration, Earthscore is a notational system with five components.

The five main kinds of phonographic notational system are the alphabet and syllabary.

All of the notational systems listed below are ideographic.

There are a number of notational systems for the Jacobi theta functions.

Ultra-Structure is also the name given to a notational system for representing complex rules.