Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
M:2/2
K:G
['gf edcB', 'G2 Bc dBde']  
X:1
L:1/8
M:2/2
K:G
 gf | edcB cBAG | E2 GA G2 gf | edcB cBcd | e2 AB A2 Bc | dBde d2 ef | g2 fe d2 BA | BAGE AGED | 
 E2 GA G2 |] Bc | dBde dBAG | EFGA G2 Bc | dBde d2 Bd | e2 eg e3 g | G2 (3GAB A2 (3ABc | 
 B2 (3cde d3 d | efgf edBd | e2 eg e2 ga | babg agae | gfgd edcB | cBcd efgf | edgB A4 | 
 BcBA G2 eg | dgBA G2 GA | BAGE AGED | E2 GA G2 |]  