Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:G
['', 'gd ed', 'Ac B2 Bd c2 Bc (3dcB (3cBA'  
X:1
L:1/8
M:4/4
K:G
 (3def |: gd ed BG G2 | DG Bd cA A2 | gd ed (3BcB GD |1 EG FA G2 (3def :|2 EG FA G4 || 
 B2 Bd c2 cd | B2 Bd AF Ac | B2 Bd c2 Bc | (3dcB (3cBA G4 :|  