- LEVEL 6 Supplemental Workbook - Ultimate Music Theory: The LEVEL 6 Supplemental Workbook is designed to be completed with the Intermediate Rudiments Workbook.
- LEVEL 8 Supplemental - Ultimate Music Theory: The LEVEL 8 Supplemental Workbook is designed to be completed with the Advanced Rudiments Workbook.
- COMPLETE LEVEL Supplemental Answer Book - Ultimate Music Theory: COMPLETE Supplemental Answer Book - Ultimate Music Theory (identical to the COMPLETE Supplemental Workbook), Saves Time for Quick, Easy
- LEVEL 7 Supplemental - Ultimate Music Theory: The LEVEL 7 Supplemental Workbook is designed to be completed after the Intermediate Rudiments and LEVEL 6 Supplemental Workbooks.
- LEVEL 5 Supplemental - Ultimate Music Theory: The LEVEL 5 Supplemental Workbook is designed to be completed after the Basic Rudiments and LEVEL 4 Supplemental Workbook.