Develop musical pieces that align with the given chord changes.
'G', 'Am', 'D', 'G', 'G', 'Am', 'D', 'G', 'Am', 'D', 'G', 'D', 'G', 'A7', 'D', 'A7', 'D', 'D'  
X:1
L:1/4
M:2/2
K:G
"^Intro." G/G/ |"G" G B/B/ B d/d/ | d g g f/g/ |"Am" e d d F |"D" A G"G" G |:"^A" G/G/ | 
"G" G B/B/ B d/d/ | d g g f/g/ |"Am" a g e c |"D" e d d/c/B/A/ |"G" G B/B/ B d/d/ | d g g f/g/ | 
"Am" e d d F |"D" A G"G" G ::[K:D]"^B" A/A/ |"D" A d/d/ d B | A a/a/ a f |"G" g f g e | 
"A7" f/g/a/g/ f d |"D" A d/d/ d B | A a/a/ a f |"A7" g f g e |1"D" d2 d :|2"D" d f/e/ d/=c/B/A/ ||  