Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:G
['DEGA BABd eg g2', 'G3 B dg g2 bg g2 bgag'  
X:1
L:1/8
M:4/4
K:G
|: E | DEGA BABd | eg g2 agea | gede gedB | cABA GE E2 | DEGA BABd | eg g2 agef | gbaf gedB | 
 AcBA G3 :: B | dg g2 bg g2 | bgag edBd | eBBA Gdef | gedB AGEG | DEGA BABd | eg g2 agef | 
 gbaf gedB | AcBA G3 :|  