Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
Q:1/4=140
M:4/4
K:G
['', 'B e2 B cB', 'dd ed B G2 z gg ag'  
X:1
L:1/8
Q:1/4=140
M:4/4
K:G
 D2 |: EF GA B e2 B | cB A/B/c B e2 B | cB Ac BA GB | AG FG E2 D2 | EF GA B e2 B | 
 cB A/B/c B e2 B | cB Ac BA GB | AG FG E2 D2 :: dd ed B G2 z | gg ag e c2 z | DE FG AB cd | 
 ed ^cd B4 | dd ed B G2 z | gg ag e c2 z | DE FG AB cd | ed ^cd G4 :|  