Penderecki made a tremendous variety of contributions to the cello repertoire. His profound respect for tradition and for his past is deeply appreciated by both performers and audiences. In each individual composition, he explored the cello’s sonorous possibilities and created a new technical and musical palette for the instrument. He worked with legendary, world-renowned cellists who not only gave the premieres of his works but also established deep friendships with him. The Divertimento/Suite for Cello Solo (1994-2013), a compilation of miniature movements, each with its sophisticated structure, demonstrates Penderecki’s three compositional style periods. Baroque and Romantic elements in each movement are achieved within their style characteristics. Penderecki’s Divertimento/Suite for Violoncello Solo is composed of eight contrasting movements that were written during a nineteen-year period. The work is characterized by a Neo-Romantic aesthetic and utilizes the cello’s dark lyrical tones with a variety of timbre and tonal contrasts. The purpose of the present study is to create a practical performance guide to this important musical work with a detailed stylistic, textural, and motivic analysis of all eight movements. Although there are many published documents and analyses of Penderecki’s orchestral, choral, chamber and other solo pieces, the Divertimento/Suite for Cello Solo has yet to be thoroughly researched and discussed in the extant cello literature. It is the lack of research concerning this work that prompts this important study. This analysis will serve to outline the unifying compositional procedures of the work and explain the special instrumental techniques employed. With its illustrations of the motivic, harmonic and the textural relationships of each movement, this study serves as a twentieth-century performance guide for the cello world.