Part. I. Decontextualized Variation -- Chapter. 1. Basic concepts -- Chapter. 2. Decomposable variation -- Chapter. 3. Measurement of similarity -- Chapter. 4. Transformational operations -- Chapter. 5. Measurement of similarity -- Part II. Variation on time -- Chapter. 6. Grundgestalt -- Chapter. 7. Developing variation -- Part III. Analysis: Brahms -Intermezzo in A Major Op.118/2 -- Chapter. 8. Formal, harmonic, and metric structure -- Chapter. 9. Derivative analysis -- Afterword -- Further Reading -- Part. IV. Appendices -- Appendix A. Variation in non-tonal contexts -- Appendix B. MDA -- Appendix. C. Algorithms.