E-Z Play Today Exploring Right-Hand Chords E6 is an instructional songbook designed for organ, piano, and keyboard players. Published by Hal Leonard Corporation in the United States, this book focuses on educational and musical genres, providing a fun and interactive way for musicians to explore right-hand chords on various instruments. Perfect for contemporary musicians looking to expand their skills and repertoire, this unit offers a comprehensive guide to chord progressions and techniques for a range of popular musical styles.