Don't fret about that. I recently saw the PBS special tribute to Les Paul. After his performance ended, with marvelos guests, his comment was that He wished he could have some of those clams back then laughed heartily. Even the best miss notes, there is a great story about Herbie Hancock playing the wrong chord wile backing up Miles Davis. Mr. Davis gives him a nasty look, then proceeds to play notes to incorporate the ill played chord into something musically sensible!