nah.. I hid it well and waited until his back was turned. I used to have the chord charts written out in pencil ahead of time on a piece of paper and opened the book to remember as many as I could. Then I'd put the book back and wander around looking at stuff and trying to appear casual as I was writing them down from memory. Then I'd wander over to my favorite Yamaha 12 string and try them out. That's how I learned all the standard chords.