- Elementary Music Theory. Basics of music theory explained in a clear and lucid way. Notation, beat and rhythm, intervals, scales and instruments
- Keyboard Guide: Chords, Scales & Modes in All Keys
- Easy Scales Guitar
- Easy Chords: Keyboard: Chords and Scales
- Die Basstabelle: Akkorde für Jazz, Rock und Pop und die wichtigsten Tonleitern
- Ben Ratliff
- Neil Stevenson
- Tilda Norberg
- John L. Clough
- Richard Carlin
- Morris Dickstein
- André Previn
- Barrett Tagliarino
- Marjorie Quarton
- Norbert Opgenoorth
- Janet Hogan
- Suzanne Guy
- American Society for the Prevention of Cruelty to Animals
- Tom Walther
- Shawndra Shofner
- Allan Kozinn
- Tony Fusco
- Kieran Walsh
- Jill Swedlow Coffey
- Ross Allan