IMPROVISATION:
- How to begin, practice and improve.
- Theory, Harmony, Composition, Arranging.

CAREER PROMOTION:
- Survival and success in the music business.
- Increase and maintain employment.
- Marketing skills.
- How to produce your own CD.

FOR GUITARISTS: How to master the instrument so that your technique doesn't get in the way of you expressing yourself.- Right and left hand technique and posture.
- Chord substitution, comping, and alternate chord progressions.
- Technical solutions in all keys on entire fingerboard.
- Playing bass lines and chords simultaneously for solo and duo    settings.
- Guitar set-up: how to make the instrument work efficiently.
- Chord soloing/melody harmonization.
- How to accompany a vocalist or instrumental soloist.
- How to play without getting hurt.

Hannah Pickett, Dean of Liberal Arts, Milwaukee Area Technical College:

"Jack has never taught in an ordinary manner and is always looking for new teaching strategies so that his students have opportunities to learn by hearing, practicing and performing."

In 1996,  Mr. Grassel was listed in the directory of                                "Who's Who Among America's Teachers":

"Jack Grassel has been selected by one or more students of merit as a teacher who made a difference in the life of that student and is therefore acknowledged for excellence as a distinguished educator."