gtr1 - bar 1 octave down
       bar 7 beat 1.5 octave down
       bar 12 upper voice "g" raised octave
       bar 13 lower voice "d" raised octave
       bar 17 octave lower
gtr2 - bar 13 octave higher
       bar 17 octave lower
       bar 20 starting at beat 2, fis - b octave up, beat 3 dis back down
       bar 27 last "f" octave higer
