Len Vogler Related books Gig Bag Book of Picture Chords for all Keyboardists (Gig Bag Books) Music Sales Corp • 1996 STEP ONE: PLAY GUITAR CHORDS Amsco Music Publishing Co. • 1997 The Compact Blues Guitar Chord Reference (Compact Reference Library) (Compact Reference Library) Music Sales Corp • 1994 The Compact Rock Guitar Chord Reference (Compact Reference Library) Music Sales Corp • 1999