You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when the sounds in a composition are left to chance we call this type of music?" whose answer is aleatoric music.
Each document should contain about 30 words, and these documents should contain useful information.

Query: chance music techniques
Useful Output:

Doc 1: Chance music is one of the new 20th century's music genres which is composed by undetermined method. That means that composers intentionally compose music
Doc 2: Chance music involves incorporating elements of randomness and serendipity into compositions. American composer John Cage was significant in the
Doc 3: This engaging musical game will reinforce music concepts as students roll dice or flip coins to determine the notes of their composition.
Doc 4:  Composition Basic Techniques - https://bit.ly/3h2Zgqc Basics of Python programming and the EarSketch API and the history and practice of
Doc 5: The document then provides examples of how to incorporate chance into music using dice rolls or tapping surfaces. It concludes by profiling two