Aprendiendo a través de la indeterminación

In this article, it is explained the application of didactic materials created for the learning of contents related to randomness (indeterminacy) in Music at Secondary Education level in Spain. These materials include both performance and listening-analyzing activities, which have been designed to facilitate both the comprehension of the musical processes implied and their uses across performing. Also, it is given a reflection on this experience taking into account the contents and their value inside a frame related to both the Music Education and the vanguard trends.