Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:4/4
K:G
['G2 G2', 'd2 dc BGBd']  
X:1
L:1/8
M:4/4
K:G
 B2 Bd A2 GE | DGBG AGEG | Bd d2 Bdde |1 dBAG EGDG :|2 dBAG EGDE || G2 G2 G2 BG | G2 BG AGEG | 
 Bd d2 Bdde |1 dBAG EGDF :|2 dBAG EG D2 || d2 dc BGBd | edgd edge | d2 dc BGBd |1 egfa g3 e :|2 
 egfa g4 ||  