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
['Bddg egdg egdB', '(3efg dg']  
X:1
L:1/8
M:4/4
K:G
 Bddg egdg | egdB BA A2 | Bddg edgd | BdAc BGG z | Bddg egdg | egdB BAA z | bgaf gedc | 
 BdAc BG G2 || (3efg dg agbg | (3efg dg ea a2 | (3efg dg agbg | edef ag g2 | (3efg dg agbg | 
 (3efg dg ea a2 | bgaf gedc | BdAc BG G2 ||  