Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
M:4/4
K:G
['d>c B<d']  
X:1
L:1/8
M:4/4
K:G
 d>c |"G" B<d d2 G<B B2 |"G" D2 G>D"Em" E>D E<G |"Am" E<A A2 B<A A2 |"C" e>d e>f"D7" g>e d>c | 
"G" B<d d2 G<B B2 |"G" D>E G>A B>G B<d |"C" e>g"D7" f<a"Em" g>e"D7" d>c |"G" B2 G2 G2 |] d>c | 
"G" B<d g2 e>d e<g |"G" G2 d>G e>d B<G |"Am" B>A A<A"^(G)" B>A B<d |"C" e>d e>f"D7" g>e d>c | 
"G" B<d g2 e>d e<g |"G" G2 d>G e>d B<G |"C" e>g"D7" f<a"Em" g>e"D7" d>c |"G" B2 G2 G2 |]  