I. J. · I. Jacobson · Ingrid Jacobson Clarfield
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Keys to Artistic Performance | 978-0-7390-5129-0 (0-7390-5129-6) | 2008 | Clarfield · Alexander · Dennis |
| Keys to Artistic Performance, Bk 2: 23 Intermediate to Late Intermediate Pieces to Inspire Imaginative Performance | 978-0-7390-5131-3 (0-7390-5131-8) | 2008 | Clarfield · Alexander · Dennis |