Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:G
['D2 G2', 'd<B g>fe>d B>c d<B']  
X:1
L:1/8
M:4/4
K:G
 D2 |:"G" G2 G>AB>c d<B | g>fe>d B>c d<B |"C" e>dc>e"Bm" d>cB>c |"Am7" A2 a>g"D7" (3fed (3cBA | 
"G" G2 G>AB>c d<B | g>fe>d B>c d<B |"C" e>dc>e"Bm" d>cB>g |"Am7" (3fed"D7" (3cBA"G" G4 :: 
"Em" b>ag>b"Bm" a>f d2 |"C" g>fe>g"Bm" f<b B2 |"C" e>dc>e"Bm" d>cB>c | 
"Am7" A2 a>g"D7" (3fed (3cBA |"Em""Em" b>ag>b"Bm" a>f d2 |"C" g>fe>g"Bm" f<b B2 | 
"C" e>dc>e"Bm" d>cB>g |"Am7" (3fed"D7" (3cBA"G" G4 :|  