The purpose of this book is to expose 5 unpublished works, composed during my stay as a master student in Musical Composition at the International University of La Rioja, Logroño, Spain 2022. This work is the compendium that shows the process of learning and development as a composer. In addition, the selected compositions are analyzed and described through a process of introspection where the relevant aspects of each work are examined, the selected compositions consist of a variety of styles and musical influences. However, the theoretical references that are named, support and argue each of the compositions that are named below; 1. A Carolina, instrumental work for orchestra. 2. Audiovisual work based on a summary of the film: Sexto Sentido (Sixth Sense). 3. Sentidos, instrumental work for quintet. 4. Audiovisual work based on a summary of the film: The Luzhin Defence. 5. Arena y cristal, electroacoustic piece.