I agree with the plaudits! They are about the best charts I have seen, including the charts in most arranging books.

To me, these are the interesting sections(see side Menu) of that Lotus website:

Music Theory Topics
◦Chord Basics
◦Chord Extensions
◦Chord Names
◦Chord Progressions
◦Chord Substitution
◦Circle of Fifths
◦Improvisation
◦Modes
◦Modulation
◦Scales
◦Secondary Dominant Chords
◦Transposing

It has taken me literally 20 years to produce charts for myself similar to these ones. And I only cover about 10% of what they have. A fantastic effort!

Akin to the OP, I don't know anything about their products.

Last edited by Graham Martin; 06/05/14 07:26 PM.

Grah Jive Talk
"Don't worry baby, they'll swing their arses off."