In music, "Simple Notes" is a commonly used term. However, if you are referring to the concept of simplifying musical notation, it could refer to a few different things:
Complex rhythms can be challenging when learning music, especially for beginners. Rhythms may be simplified by using longer note durations or by breaking down complex rhythms into simpler patterns to make them easier to understand.
It's important to note that simplifying musical notation is often done for educational or practical purposes. Ultimately, the goal is to make the music more accessible and playable while retaining its essence and musicality.