This document examines the pedagogical and historical importance of Raymond Helble’s solo marimba music. Selected titles include The Well-Tempered Marimbist Books One and Two (1983), Preludes for Marimba Nos. 1-3 (1971), Nos. 4-6 (1973), Nos. 7-9 (1981), Nos. 10-12 (1999), Theme with Six Variations (1981), Toccata Fantasy in E-flat Minor (1980), and Grand Fantasy in C Major (1973). By studying the music, I show how Helble’s compositions can be used to promote mature musicianship marked by excellent technical skills, attention to detail, and creative performance practices. The pedagogical aspect of this document exposes the technical and musical challenges of the selected works and illustrates their application to Helble’s advanced pieces. The performance aspect of this document illustrates the parallels between Helble’s pieces and works of other classical composers, including performance practices, to provoke a thoughtful interpretation of the music. This document demonstrates that Helble’s music for solo marimba illuminates the connection between technical competence, historical knowledge, and musical expression.