By Heather Rathnau. Edited by Heather Rathnau. For General Music Theory. This edition: Treble & Bass Clef. Includes root position, first and second inversion in 15 keys. 4 1/4 x 5 1/2 size; Perfect for small group or private teacher; includes chords in root position, first & second inversion (15 key signatures included). 45 cards pages. Published by Theory Time Partners.